Replace set-output in Github Actions (close #305)

Author: benjben

.github/workflows/cookieless.yml

@@ -22,14 +22,14 @@ jobs:
         id: non-anonymous
         run: |
           output=$(curl -X POST -i http://0.0.0.0:12345/com.snowplowanalytics.snowplow/tp2  -d '{}' 2>&1 | grep -q 'Set-Cookie')
-          echo "::set-output name=exit_code::$?"
+          echo "exit_code=$?" >> $GITHUB_OUTPUT
       - name: Test anonymous tracking
         id: anonymous
         if: ${{ steps.non-anonymous.outputs.exit_code == 0 }}
         run: |
           set +e
           output=$(curl -X POST -i http://0.0.0.0:12345/com.snowplowanalytics.snowplow/tp2 -H 'SP-Anonymous: *' -d '{}' 2>&1 | grep -q 'Set-Cookie')
-          echo "::set-output name=exit_code::$?"
+          echo "exit_code=$?" >> $GITHUB_OUTPUT
       - name: Report outcome
         if: ${{ steps.non-anonymous.outputs.exit_code == 0 && steps.anonymous.outputs.exit_code == 1 }}
         run: echo "All tests successful!"

.github/workflows/deploy.yml

@@ -28,7 +28,7 @@ jobs:
         id: ver
         run: |
           export PROJECT_VERSION=$(sbt "project core" version -Dsbt.log.noformat=true | perl -ne 'print "$1\n" if /info.*(\d+\.\d+\.\d+[^\r\n]*)/' | tail -n 1 | tr -d '\n')
-          echo "::set-output name=project_version::$PROJECT_VERSION"
+          echo "project_version=$PROJECT_VERSION" >> $GITHUB_OUTPUT
       - name: Create GitHub release and attach artifacts
         uses: softprops/action-gh-release@v1
         with:
@@ -80,7 +80,7 @@ jobs:
         id: ver
         run: |
           export PROJECT_VERSION=$(sbt "project core" version -Dsbt.log.noformat=true | perl -ne 'print "$1\n" if /info.*(\d+\.\d+\.\d+[^\r\n]*)/' | tail -n 1 | tr -d '\n')
-          echo "::set-output name=project_version::$PROJECT_VERSION"
+          echo "project_version=$PROJECT_VERSION" >> $GITHUB_OUTPUT
 
       - name: Stage the Docker build
         run: sbt "project ${{ matrix.platform }}" docker:stage