Bump sigstore/cosign-installer from 2.0.1 to 2.1.0 (#708)

* 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](https://github.com/sigstore/cosign-installer/compare/179e0f15e70e22ca2e7254fc12d68a9fbab35614...581838fbedd492d2350a9ecd427a95d6de1e5d01

)

---
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>

* update version comment

Signed-off-by: cpanato <ctadeu@gmail.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: cpanato <ctadeu@gmail.com>

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@a12a3943b4bdde767164f792f33f40b04645d846 # v3
-      - uses: sigstore/cosign-installer@179e0f15e70e22ca2e7254fc12d68a9fbab35614 # v2.0.1
+      - uses: sigstore/cosign-installer@581838fbedd492d2350a9ecd427a95d6de1e5d01 # v2.1.0
 
       - name: Extract version of Go to use
         run: echo "GOVERSION=$(cat Dockerfile|grep golang | awk ' { print $2 } ' | cut -d '@' -f 1 | cut -d ':' -f 2 | uniq)" >> $GITHUB_ENV