⬆️ Bump sigstore/cosign-installer from 2.0.1 to 2.1.0

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 2.0.1 to 2.1.0.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@v2.0.1...v2.1.0)

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

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

.github/workflows/ci.yaml

@@ -79,7 +79,7 @@ jobs:
           check-latest: true
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@v2.0.1
+        uses: sigstore/cosign-installer@v2.1.0
         with:
           cosign-release: 'v1.5.2'
 
@@ -158,7 +158,7 @@ jobs:
 
     steps:
       - name: Install cosign
-        uses: sigstore/cosign-installer@v2.0.1
+        uses: sigstore/cosign-installer@v2.1.0
         with:
           cosign-release: 'v1.5.2'
 
@@ -208,7 +208,7 @@ jobs:
           GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@v2.0.1
+        uses: sigstore/cosign-installer@v2.1.0
         with:
           cosign-release: 'v1.5.2'
 
@@ -244,7 +244,7 @@ jobs:
 
     steps:
       - name: Install cosign
-        uses: sigstore/cosign-installer@v2.0.1
+        uses: sigstore/cosign-installer@v2.1.0
         with:
           cosign-release: 'v1.5.2'