Bump sigstore/cosign-installer from 2.8.0 to 2.8.1 (#439)

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 2.8.0 to 2.8.1.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@7cc35d7...9becc61)

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

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

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

.github/workflows/add-remove-new-fulcio.yaml

@@ -72,7 +72,7 @@ jobs:
       with:
         version: v0.12.0
 
-    - uses: sigstore/cosign-installer@7cc35d7fdbe70d4278a0c96779081e6fac665f88 # v2
+    - uses: sigstore/cosign-installer@9becc617647dfa20ae7b1151972e9b3a2c338a2b # v2
 
     - name: Setup Cluster
       uses: chainguard-dev/actions/setup-kind@main

.github/workflows/fulcio-rekor-kind.yaml

@@ -79,7 +79,7 @@ jobs:
       with:
         version: v0.12.0
 
-    - uses: sigstore/cosign-installer@7cc35d7fdbe70d4278a0c96779081e6fac665f88 # v2
+    - uses: sigstore/cosign-installer@9becc617647dfa20ae7b1151972e9b3a2c338a2b # v2
 
     - name: Setup Cluster
       uses: chainguard-dev/actions/setup-kind@main

.github/workflows/release.yaml

@@ -29,7 +29,7 @@ jobs:
       uses: imjasonh/setup-ko@v0.6
 
     - name: Install cosign
-      uses: sigstore/cosign-installer@7cc35d7fdbe70d4278a0c96779081e6fac665f88 # v2
+      uses: sigstore/cosign-installer@9becc617647dfa20ae7b1151972e9b3a2c338a2b # v2
 
     - name: Install GoReleaser
       uses: goreleaser/goreleaser-action@b508e2e3ef3b19d4e4146d4f8fb3ba9db644a757 # v3.1.0

.github/workflows/test-action-tuf.yaml

@@ -47,7 +47,7 @@ jobs:
 
     # Install cosign
     - name: Install cosign
-      uses: sigstore/cosign-installer@7cc35d7fdbe70d4278a0c96779081e6fac665f88 # v2
+      uses: sigstore/cosign-installer@9becc617647dfa20ae7b1151972e9b3a2c338a2b # v2
 
     - name: Set up Go
       uses: actions/setup-go@c4a742cab115ed795e34d4513e2cf7d472deb55f # v3.3.0

.github/workflows/test-release.yaml

@@ -39,7 +39,7 @@ jobs:
     steps:
     - uses: chainguard-dev/actions/setup-mirror@main
 
-    - uses: sigstore/cosign-installer@7cc35d7fdbe70d4278a0c96779081e6fac665f88 # v2
+    - uses: sigstore/cosign-installer@9becc617647dfa20ae7b1151972e9b3a2c338a2b # v2
 
     - name: Set up Go
       uses: actions/setup-go@c4a742cab115ed795e34d4513e2cf7d472deb55f # v3.3.0