Bump sigstore/cosign-installer from 1.4.1 to 2.0.0 (#642)

* Bump sigstore/cosign-installer from 1.4.1 to 2.0.0

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 1.4.1 to 2.0.0.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](https://github.com/sigstore/cosign-installer/compare/116dc6872c0a067bcb78758f18955414cdbf918f...51f8e5c6fce54e46006ae97d73b2b6315f518752

)

---
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>

* update version marker

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

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

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 #v2.4.0
-      - uses: sigstore/cosign-installer@116dc6872c0a067bcb78758f18955414cdbf918f #v1.4.1
+      - uses: sigstore/cosign-installer@51f8e5c6fce54e46006ae97d73b2b6315f518752 #v2.0.0
 
       - 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