chore(deps): bump sigstore/cosign-installer from 3.8.1 to 3.8.2 (#4714)

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.8.1 to 3.8.2.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](https://github.com/sigstore/cosign-installer/compare/d7d6bc7722e3daa8354c50bcb52f4837da5e9b6a...3454372f43399081ed03b604cb2d021dabca52bb)

---
updated-dependencies:
- dependency-name: sigstore/cosign-installer
  dependency-version: 3.8.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Gergely Brautigam <182850+Skarlso@users.noreply.github.com>

.github/workflows/helm.yml

@@ -133,7 +133,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@d7d6bc7722e3daa8354c50bcb52f4837da5e9b6a # v3.8.1
+        uses: sigstore/cosign-installer@3454372f43399081ed03b604cb2d021dabca52bb # v3.8.2
         with:
           cosign-release: 'v2.4.1'