Update sigstore/cosign-installer action to v4

Author: renovate[bot]

.github/actions/build-and-push/action.yaml

@@ -41,7 +41,7 @@ runs:
       uses: actions/checkout@v5
 
     - name: Install cosign
-      uses: sigstore/cosign-installer@v3.9.2
+      uses: sigstore/cosign-installer@v4.0.0
 
     - name: Set up QEMU
       if: ${{ inputs.platform != 'amd64' }}