v0.20.3: Support for autoscale by workflow_job webhook for enterprise runners

CAUTION: If you're using the Helm chart, beware to review changes to CRDs and do manually upgrade CRDs! Helm installs CRDs only on installing a chart. It doesn't automatically upgrade CRDs. Otherwise you end up with troubles like #427, #467, and #468. Please refer to the UPGRADING docs for the latest process.

This is a big release with lots of fixes and a few features! (sorry if you're off the list, this release included a lot of changes so I've only mentioned the major stuff below, all changes are highly appreciated!)

What's Changed

• chore(deps): update dependency actions/runner to v2.283.2 by @renovate in #857
• chore: bump helm chart to latest app version by @toast-gear in #862
• ci: add label to renovate pull requests by @toast-gear in #863
• ci: disable chart version bump check by @toast-gear in #870
• chore(deps): update dependency actions/runner to v2.283.3 by @renovate in #871
• chore: support app ids as int or strings by @toast-gear in #869
• ci: publish chart on chart.yaml changes only by @toast-gear in #873
• ci: fix chart publish workflow by @toast-gear in #874
• Revert "feat: adding workflow_dispatch webhook event" by @toast-gear in #879
• Add topologySpreadConstraints by @foxdalas in #814
• Fix: Have githubwebhook monitor a single namespace by @sledigabel in #828
• Fix maxReplicas typo in HorizontalRunnerAutoscaler spec comment by @KeisukeYamashita in #895
• feat: Added option for secret annotation by @maxtacu in #824
• Create optional serviceAnnotations value in helm chart by @arunanandhan in #867
• Revert "chore: support app ids as int or strings (#869)" by @apr-1985 in #883
• chore: bumping chart for new release by @toast-gear in #903
• chore: correct logging typo by @apr-1985 in #904
• Add how-to for testing controller built from PR by @mumoshu in #908
• docs: clean up auto scaling documentation by @toast-gear in #909
• docs: fix broken link by @toast-gear in #916
• docs: Update examples of RunnerDeployment in README.md by @exklamationmark in #913
• docs: minor correction to autoscaling description by @toast-gear in #917
• docs: correct anti-flapping example by @toast-gear in #918
• docs: clarify runnerset limitation by @toast-gear in #919
• chore(deps): update dependency actions/runner to v2.284.0 by @renovate in #929
• Fail with detailed message on envvar parse error by @mumoshu in #907
• Add webhook-based autoscale for Enterprise runners by @mumoshu in #906
• Remove unnecessary scale-target-not-found error on in_progress workflow_job event by @mumoshu in #927
• Reduce number of http superfluous messages by @zotrix in #894
• doc: Add GitHub App Permission for Workflow Job Webhook by @mumoshu in #932

New Contributors

• @foxdalas made their first contribution in #814
• @KeisukeYamashita made their first contribution in #895
• @maxtacu made their first contribution in #824
• @arunanandhan made their first contribution in #867
• @apr-1985 made their first contribution in #883
• @exklamationmark made their first contribution in #913
• @zotrix made their first contribution in #894

Full Changelog: v0.20.2...v0.20.3