build(deps): bump azure/setup-helm from 3.5 to 4 (#522)

Bumps [azure/setup-helm](https://github.com/azure/setup-helm) from 3.5 to 4.
- [Release notes](https://github.com/azure/setup-helm/releases)
- [Changelog](https://github.com/Azure/setup-helm/blob/main/CHANGELOG.md)
- [Commits](Azure/setup-helm@5119fcb...fe7b79c)

---
updated-dependencies:
- dependency-name: azure/setup-helm
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/deploy.yaml

@@ -21,7 +21,7 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@v4 # ratchet:exclude
-      - uses: azure/setup-helm@5119fcb9089d432beecbf79bb2c7915207344b78 # ratchet:azure/setup-helm@v3
+      - uses: azure/setup-helm@fe7b79cd5ee1e45176fcad797de68ecaf3ca4814 # ratchet:azure/setup-helm@v3
         with:
           version: "v3.11.1"
       - uses: nais/build-push-sign@main