Update the cosign-install action and default version from 1.4.0 to 1.… (#1452)

* Update the cosign-install action and default version from 1.4.0 to 1.5.1.

Signed-off-by: Dan Lorenc <lorenc.d@gmail.com>

* Update to 1.7.1 and the latest cosign-installer action.

Signed-off-by: Dan Lorenc <lorenc.d@gmail.com>

Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com>

ci/docker-publish.yml

@@ -41,9 +41,9 @@ jobs:
       # https://github.com/sigstore/cosign-installer
       - name: Install cosign
         if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@1e95c1de343b5b0c23352d6417ee3e48d5bcd422
+        uses: sigstore/cosign-installer@d6a3abf1bdea83574e28d40543793018b6035605
         with:
-          cosign-release: 'v1.4.0'
+          cosign-release: 'v1.7.1'
 
 
       # Workaround: https://github.com/docker/build-push-action/issues/461