Incorporated OIDC for authenticating towards Azure in GH Action

Author: hvalfangst

.github/workflows/deploy_to_azure.yml

@@ -62,7 +62,7 @@ jobs:
         id: deploy-to-function
         with:
           app-name: 'hvalfangstlinuxfunctionapp'
-            slot-name: 'Production'
+          slot-name: 'Production'
           package: ${{ env.AZURE_FUNCTIONAPP_PACKAGE_PATH }}
           scm-do-build-during-deployment: true
           enable-oryx-build: true