⬆️ Bump sigstore/cosign-installer from 3.2.0 to 3.4.0

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.2.0 to 3.4.0.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@v3.2.0...v3.4.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/ci.yaml

@@ -82,7 +82,7 @@ jobs:
           check-latest: true
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@v3.2.0
+        uses: sigstore/cosign-installer@v3.4.0
         with:
           cosign-release: 'v2.2.1'
 
@@ -145,7 +145,7 @@ jobs:
 
     steps:
       - name: Install cosign
-        uses: sigstore/cosign-installer@v3.2.0
+        uses: sigstore/cosign-installer@v3.4.0
         with:
           cosign-release: 'v2.2.1'
 
@@ -197,7 +197,7 @@ jobs:
           GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@v3.2.0
+        uses: sigstore/cosign-installer@v3.4.0
         with:
           cosign-release: 'v2.2.1'
 
@@ -229,7 +229,7 @@ jobs:
 
     steps:
       - name: Install cosign
-        uses: sigstore/cosign-installer@v3.2.0
+        uses: sigstore/cosign-installer@v3.4.0
         with:
           cosign-release: 'v2.2.1'