Release v5.3.0

What's Changed

• ci: conditionally update cache by @j-zimnowoda in #833
• ci: fetch tags on checkout by @j-zimnowoda in #834
• chore(deps): bump actions/checkout from 6 to 7 by @dependabot[bot] in #835
• fix: duplicate name check by @dennisvankekem in #829
• chore(deps): bump nginx from 1.31.1-alpine to 1.31.3-alpine in the docker-dependencies group by @dependabot[bot] in #836
• fix: overview pages sorting by @dennisvankekem in #843
• fix: header switch dash and apps by @dennisvankekem in #842
• chore: add external-secrets app by @merll in #846
• fix: platform secret namespace length by @dennisvankekem in #847

Full Changelog: v5.2.0...v5.3.0