Add DepGroupUpdate to c9k auto-issue-classes

[sylvainsf]

What

Adds DepGroupUpdate to auto-issue-classes in .github/workflows/c9k-failure-report.yml so c9k will also auto-file issues for grouped dependency updates (e.g. dependabot grouped PRs), in addition to single major-version bumps.

Why

Grouped dependency updates are a common source of CI breakage in this repo, and v2.0.0 of c9k classifies them as their own root-cause class (DepGroupUpdate). Filing them gives us a per-cause issue instead of burying them in the rolling digest.

Compatibility

FlakyTestRun is intentionally still excluded from this list, flaky groups are handled via auto-close-flaky: true and never get assigned to Copilot.

Per the v2.0.0 action.yml, the default value is CodeChange,BrokenTestRun,DepMajorBump,DepGroupUpdate, so this brings the workflow in line with that default while keeping it explicit.

[github-actions]

This PR requires exactly 1 of the following labels: pr:standard, pr:important.
Currently applied labels: .

Label descriptions:

• pr:important - Major features, breaking changes, deprecations, or other high-impact changes that need special attention during release.
• pr:standard - Ongoing maintenance, minor improvements, documentation updates, and routine development work.

@sylvainsf, please add the appropriate label to this PR before merging.

[radius-functional-tests]

Radius functional test overview

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Click here to see the test run details

Name	Value
Repository	radius-project/radius
Commit ref	649a290
Unique ID	funcb2b1e9c11f
Image tag	pr-funcb2b1e9c11f

• gotestsum 1.13.0
• KinD: v0.29.0
• Dapr: 1.14.4
• Azure KeyVault CSI driver: 1.4.2
• Azure Workload identity webhook: 1.3.0
• Bicep recipe location ghcr.io/radius-project/dev/test/testrecipes/test-bicep-recipes/<name>:pr-funcb2b1e9c11f
• Terraform recipe location http://tf-module-server.radius-test-tf-module-server.svc.cluster.local/<name>.zip (in cluster)
• applications-rp test image location: ghcr.io/radius-project/dev/applications-rp:pr-funcb2b1e9c11f
• dynamic-rp test image location: ghcr.io/radius-project/dev/dynamic-rp:pr-funcb2b1e9c11f
• controller test image location: ghcr.io/radius-project/dev/controller:pr-funcb2b1e9c11f
• ucp test image location: ghcr.io/radius-project/dev/ucpd:pr-funcb2b1e9c11f
• deployment-engine test image location: ghcr.io/radius-project/deployment-engine:latest

Test Status

⌛ Building Radius and pushing container images for functional tests...
✅ Container images build succeeded
⌛ Publishing Bicep Recipes for functional tests...
✅ Recipe publishing succeeded
⌛ Starting corerp-cloud functional tests...
⌛ Starting ucp-cloud functional tests...
✅ ucp-cloud functional tests succeeded
✅ corerp-cloud functional tests succeeded

[Copilot]

Pull request overview

Updates the CI failure reporting workflow to include grouped dependency updates in c9k’s auto-issue classification list, so failures caused by grouped dependency PRs can be tracked as their own root-cause issues.

Changes:

• Add DepGroupUpdate to the auto-issue-classes input for the c9k action in the scheduled failure report workflow.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 51.37%. Comparing base (4d7a0ba) to head (649a290).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11747      +/-   ##
==========================================
- Coverage   51.38%   51.37%   -0.01%     
==========================================
  Files         699      699              
  Lines       44111    44111              
==========================================
- Hits        22665    22663       -2     
- Misses      19278    19279       +1     
- Partials     2168     2169       +1     

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