Prepare 0.12.0 release

[nikola-jokic]

Changes

• Allow use of client id as an app id #4057
• Relax version requirements to allow patch version mismatch #4080
• Refactor resource naming removing unnecessary calculations #4076
• Fix busy runners metric #4016
• Include more context to errors raised by github/actions client #4032
• Revised dashboard #4022
• feat(helm): move dind to sidecar #3842
• Pin third party actions #3981
• Fix docker lint warnings #4074
• Bump the gomod group across 1 directory with 7 updates #4008
• Bump go version #4075
• Add job_workflow_ref label to listener metrics #4054
• Bump github.com/cloudflare/circl from 1.6.0 to 1.6.1 #4118
• Avoid nil point when config.Metrics is nil and expose all metrics if none are configured #4101
• Bump github.com/golang-jwt/jwt/v5 from 5.2.1 to 5.2.2 #4120
• Add startup probe to dind side-car #4117
• Delete config secret when listener pod gets deleted #4033
• Add response body to error when fetching access token #4005
• Azure Key Vault integration to resolve secrets #4090
• Create backoff mechanism for failed runners and allow re-creation of failed ephemeral runners #4059

[rentziass]

🚀

[Copilot]

Pull Request Overview

This PR prepares the 0.12.0 release by updating version references, the changelog, and related workflows.

• Update changelog with 0.12.0 entries in README
• Bump Chart and appVersion in both Helm charts to 0.12.0
• Update e2e workflow IMAGE_VERSION to 0.12.0

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
docs/gha-runner-scale-set-controller/README.md	Added changelog entries for v0.12.0
charts/gha-runner-scale-set/Chart.yaml	Bumped chart version and appVersion
charts/gha-runner-scale-set-controller/Chart.yaml	Bumped chart version and appVersion
.github/workflows/gha-e2e-tests.yaml	Updated IMAGE_VERSION to 0.12.0