v3.28.3

Development and CI/CD

• (ci) Align files according to platform standards by @giantswarm-align-files[bot] — Adds concurrency groups to the chart test, README link, values schema, gitleaks, pre-commit and semantic pull request workflows from the giantswarm/github templates, so a new push cancels the pull request's previous run.

Full Changelog: v3.28.2...v3.28.3