github-action: Replace deprecated command with environment file

In workflow, `set-output` command is deprecated and will be disabled soon.
This commit replaces the deprecated `set-output` command with putting a
value in the environment file `$GITHUB_OUTPUT`.

Fixes #6266

Signed-off-by: jongwooo <jongwooo.han@gmail.com>

.github/workflows/add-backport-label.yaml

@@ -62,15 +62,15 @@ jobs:
           has_backport_needed_label=${{ contains(github.event.pull_request.labels.*.name, 'needs-backport') }}
           has_no_backport_needed_label=${{ contains(github.event.pull_request.labels.*.name, 'no-backport-needed') }}
 
-          echo "::set-output name=add_backport_label::false"
+          echo "add_backport_label=false" >> $GITHUB_OUTPUT
           if [ $has_backport_needed_label  = true ] || [ $has_bug  = true ]; then
             if [[ $has_no_backport_needed_label = false ]]; then
-              echo "::set-output name=add_backport_label::true"
+              echo "add_backport_label=true" >> $GITHUB_OUTPUT
             fi
           fi
 
           # Do not spam comment, only if auto-backport label is going to be newly added.
-          echo "::set-output name=auto_backport_added::$CONTAINS_AUTO_BACKPORT"
+          echo "auto_backport_added=$CONTAINS_AUTO_BACKPORT" >> $GITHUB_OUTPUT
 
       - name: Add comment
         if: ${{ !contains(github.event.pull_request.labels.*.name, 'force-skip-ci') && steps.add_label.outputs.add_backport_label == 'true' && steps.add_label.outputs.auto_backport_added == 'false' }}
@@ -97,4 +97,4 @@ jobs:
         uses: andymckay/labeler@e6c4322d0397f3240f0e7e30a33b5c5df2d39e90
         with:
           add-labels: "auto-backport"
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          repo-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/kata-deploy-test.yaml

@@ -67,7 +67,7 @@ jobs:
                 ref="refs/pull/${{ github.event.inputs.pr }}/merge"
             fi
             echo "reference for PR: " ${ref} "event:" ${{ github.event_name }}
-            echo "##[set-output name=pr-ref;]${ref}"
+            echo "pr-ref=${ref}" >> $GITHUB_OUTPUT
       - uses: actions/checkout@v2
         with:
           ref: ${{ steps.get-PR-ref.outputs.pr-ref }}
@@ -107,7 +107,7 @@ jobs:
                 ref="refs/pull/${{ github.event.inputs.pr }}/merge"
             fi
             echo "reference for PR: " ${ref} "event:" ${{ github.event_name }}
-            echo "##[set-output name=pr-ref;]${ref}"
+            echo "pr-ref=${ref}" >> $GITHUB_OUTPUT
       - uses: actions/checkout@v2
         with:
           ref: ${{ steps.get-PR-ref.outputs.pr-ref }}
@@ -138,7 +138,7 @@ jobs:
                 ref="refs/pull/${{ github.event.inputs.pr }}/merge"
             fi
             echo "reference for PR: " ${ref} "event:" ${{ github.event_name }}
-            echo "##[set-output name=pr-ref;]${ref}"
+            echo "pr-ref=${ref}" >> $GITHUB_OUTPUT
       - uses: actions/checkout@v2
         with:
           ref: ${{ steps.get-PR-ref.outputs.pr-ref }}
@@ -156,7 +156,7 @@ jobs:
           docker push quay.io/kata-containers/kata-deploy-ci:$PR_SHA
           mkdir -p packaging/kata-deploy
           ln -s $GITHUB_WORKSPACE/tools/packaging/kata-deploy/action packaging/kata-deploy/action
-          echo "::set-output name=PKG_SHA::${PR_SHA}"
+          echo "PKG_SHA=${PR_SHA}" >> $GITHUB_OUTPUT
       - name: test-kata-deploy-ci-in-aks
         uses: ./packaging/kata-deploy/action
         with:

.github/workflows/release.yaml

@@ -89,7 +89,7 @@ jobs:
           docker push quay.io/kata-containers/kata-deploy-ci:$pkg_sha
           mkdir -p packaging/kata-deploy
           ln -s $GITHUB_WORKSPACE/tools/packaging/kata-deploy/action packaging/kata-deploy/action
-          echo "::set-output name=PKG_SHA::${pkg_sha}"
+          echo "PKG_SHA=${pkg_sha}" >> $GITHUB_OUTPUT
       - name: test-kata-deploy-ci-in-aks
         uses: ./packaging/kata-deploy/action
         with: