build(deps): bump sigstore/cosign-installer from 2.8.1 to 3.1.1

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 2.8.1 to 3.1.1.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@v2.8.1...v3.1.1)

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

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

.github/workflows/push-ld.yml

@@ -16,7 +16,7 @@ jobs:
       packages: write
     steps:
       - uses: actions/checkout@v3
-      - uses: sigstore/cosign-installer@v2.8.1
+      - uses: sigstore/cosign-installer@v3.1.1
       - name: Prepare
         id: prep
         run: |

.github/workflows/release.yml

@@ -26,7 +26,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: fluxcd/flux2/action@main
-      - uses: sigstore/cosign-installer@v2.8.1
+      - uses: sigstore/cosign-installer@v3.1.1
       - name: Prepare
         id: prep
         run: |