Update release.yml

Author: gautamdsheth

.github/workflows/release.yml

@@ -31,4 +31,4 @@ jobs:
       shell: pwsh
       run: |
         $securedPassword = ConvertTo-SecureString "${{ secrets.DOCKER_PASSWORD }}" -AsPlainText -Force
-        ./docker/Publish-UnpublishedImage.ps1 PnP.PowerShell ${{ secrets.DOCKER_USERNAME }} ${{ secrets.DOCKER_ORG }} powershell $securedPassword "root" $false "alpine-3.14"
+        ./docker/Publish-UnpublishedImage.ps1 PnP.PowerShell ${{ secrets.DOCKER_USERNAME }} ${{ secrets.DOCKER_ORG }} powershell $securedPassword "root" $false "alpine-3.16.5"