build(deps): bump google.golang.org/grpc from 1.79.3 to 1.83.1

[dependabot]

Bumps google.golang.org/grpc from 1.79.3 to 1.83.1.

Release notes

Sourced from google.golang.org/grpc's releases.

Release 1.83.1

Security

• xds/rbac: Fix a bug where nested Principal or Permission rules with :scheme or grpc- prefixed header matchers were not rejected, which could cause DENY rules to fail open. (#9258)
  • Special Thanks: @​nvxbug
• xds/rbac: Fix a bug where the host header matcher was not being replaced with :authority in nested Principal or Permission rules. (#9258)
  • Special Thanks: @​nvxbug
• xds/rbac: Fix a bug where a header matcher whose name was not lowercase, such as X-Role, matched no header, which could cause DENY rules to fail open. (#9332)
  • Special Thanks: @​alimony
• xds/rbac: Fix a bug where a :scheme or grpc- prefixed header matcher was accepted when its name was not lowercase. (#9332)
  • Special Thanks: @​alimony
• xds/rbac: Fix a bug where a Host header matcher was not replaced with :authority. (#9332)
  • Special Thanks: @​alimony

Performance

• transport: Restrict memory overhead of buffering small data frames. (#9331)

Release 1.83.0

Security

• server: Stop reading from connections when flooded by HTTP/2 frames to mitigate resource exhaustion. The default value for this limit is 100 frames, excluding DATA and HEADERS, and may be changed by setting environment variable GRPC_GO_EXPERIMENTAL_CONTROL_BUFFER_THROTTLE_LIMIT.
• xds/rbac: Support Metadata and RequestedServerName permissions matcher fields. If present in a DENY rule, previously these would be ignored and fail-open.
• xds/rbac: Fix panic when parsing unsupported fields in NotRule/NotId permissions.
• xds/rbac: Support the deprecated source_ip principal identifier by treating it as equivalent to direct_remote_ip.
• xds: Fix panic when parsing route header matchers configured with empty exact_match, prefix_match, or suffix_match strings. (#9223)

New Features

• xds/googlec2p: Enable DirectPath over Interconnect support for on-premises clients via the force-xds target URI query parameter. (#9133)
• xds: Enable xDS configuration to control which fields get propagated from ORCA backend metric reports to LRS load reports. (#9145)
• authz: Add OnPolicyUpdate callback to FileWatcherOptions to notify when an authz policy is loaded or updated. (#9142)
  • Special Thanks: @​hnefatl
• xds: Add support for the GCP Authentication HTTP Filter, which automatically fetches and attaches GCP Service Account Identity JWT tokens to outgoing RPCs.
  • This feature can be enabled by setting environment variable GRPC_EXPERIMENTAL_XDS_GCP_AUTHENTICATION_FILTER=true. (#9119)
• xds: Add support for xDS-based HTTP CONNECT proxies.
  • This feature can be enabled by setting environment variable GRPC_EXPERIMENTAL_XDS_HTTP_CONNECT=true. (#9151)
• xds: Add support for contains_match in route header matchers. (#9223)

Bug Fixes

• credentials/alts: Fix panic when processing malformed frames by validating that the message frame length exceeds the message type field size. (#9197)
• grpc: Fix compilation on Plan 9 targets (GOOS=plan9), broken since v1.81.0. (#9255)
  • Special Thanks: @​Yusufihsangorgel

Release 1.82.2

Security

• server: Reject requests missing both :authority and Host headers with HTTP 400 and status Internal. (grpc/grpc-go#9365)

... (truncated)

Commits

• 1550d9e Change version to 1.83.1 (#9336)
• ebba6f3 Cherry-pick #9258 and #9332 into v1.83.x (#9335)
• 8cfeca0 Cherry-pick #9331 to v1.83.x (#9333)
• dec6951 Change version to 1.83.1-dev (#9229)
• 4c226da Change version to 1.83.0 (#9228)
• c198988 Cherrypick 9223 into v1.83.x (#9279)
• 8ce3ebf Cherrypick PR 9255 into v1.83.x (#9263)
• e393849 Cherry-pick recent changes from master (#9240)
• 2a112a8 authz: add onPolicyUpdate callback to authz file watcher (#9142)
• 1a80fca vet: adds a check to disallow usage of regex.Compile in xDS code (#9216)
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
  You can disable automated security fix PRs for this repo from the Security Alerts page.

[github-actions]

Dependency Bump Evaluation

Version change: 1.79.3 -> 1.83.1 (multi-minor, spanning 4 minor versions)
Semver bump type: minor (x4) + patches

Changes across versions:

• v1.80.0: Behavioral changes to balancer name warnings, xDS error handling, TLS authority validation against leaf cert, pooled HTTP/2 write buffers enabled by default
• v1.81.0: Minimum Go version raised to 1.25
• v1.82.0: GRPC_GO_EXPERIMENTAL_DISABLE_STRICT_PATH_CHECKING env var removed; balancer registry now case-sensitive
• v1.82.1-1.83.1: Multiple security fixes (HTTP/2 frame flood mitigation, xds/rbac DENY rules fail-open fixes, request rejection without :authority/Host)

Breaking changes: Yes — strict path checking env var removed (v1.82.0), balancer registry case-sensitive (v1.82.0), min Go raised to 1.25 (v1.81.0). None affect this project (see impact below).

Security concerns: None adverse — the bump includes important security fixes (HTTP/2 resource exhaustion, xds/rbac authorization bypasses). These are beneficial even as transitive fixes.

Impact on codebase: google.golang.org/grpc is a purely indirect dependency — zero direct imports in Go source files. It is pulled in transitively by controller-runtime / Kubernetes client libraries. The breaking changes (balancer registry, xDS, strict path env var) are in subsystems this Kubernetes operator does not configure or interact with directly. Project uses Go 1.26.5, which satisfies the new 1.25 minimum.

Recommendation: SAFE TO MERGE

Notes: CI checks are still in progress at time of review. Verify they pass before merging.

— Claude Code