Bump the actions group with 1 update (#137)

Bumps the actions group with 1 update: [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer).

- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@11086d2...1fc5bd3)

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

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

Author: dependabot[bot]

action.yml

@@ -20,7 +20,7 @@ inputs:
 runs:
   using: composite
   steps:
-    - uses: sigstore/cosign-installer@11086d25041f77fe8fe7b9ea4e48e3b9192b8f19 # v3.1.2
+    - uses: sigstore/cosign-installer@1fc5bd396d372bee37d608f955b336615edf79c8 # v3.2.0
     - run: |
         cd $GITHUB_ACTION_PATH \
         && ./ct.sh \