chore(ci): bump sigstore/cosign-installer from 3.10.1 to 4.1.2

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.10.1 to 4.1.2.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@7e8b541...6f9f177)

---
updated-dependencies:
- dependency-name: sigstore/cosign-installer
  dependency-version: 4.1.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/release.yml

@@ -1302,7 +1302,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@7e8b541eb2e61bf99390e1afd4be13a184e9ebc5 # v3.10.1
+        uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
 
       - name: Sign checksums (keyless)
         # Cosign keyless signing — OIDC identity comes from the GitHub Actions JWT

.github/workflows/retry-sign-release.yml

@@ -349,7 +349,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@7e8b541eb2e61bf99390e1afd4be13a184e9ebc5 # v3.10.1
+        uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
 
       # Keyless cosign signature — OIDC identity from the GitHub Actions JWT.
       # id-token: write is granted at the workflow level.