clean up version-checking workflow (#42)

TODO: Automatically bump npm package, commit back to repo, and publish new version.

.github/workflows/check-releases.yml

@@ -1,7 +1,5 @@
 name: Check for Hugo releases
 
-# TODO: instead of failing CI, send a notification via email/slack/twilio/etc.
-
 on:
   schedule:
   - cron: '0 */3 * * *'   # run every three hours
@@ -10,31 +8,33 @@ on:
 jobs:
   check:
     runs-on: ubuntu-latest
-    env:
-      # https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/
-      ACTIONS_ALLOW_UNSECURE_COMMANDS: true
     steps:
     - name: Get latest Hugo version
+      id: hugo_version
       # https://gist.github.com/lukechilds/a83e1d7127b78fef38c2914c4ececc3c
       run: |
-        HUGO_VERSION=$(curl --silent "https://api.github.com/repos/gohugoio/hugo/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
+        HUGO_VERSION=$(curl --silent "https://api.github.com/repos/gohugoio/hugo/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/' | tr -d "v")
-        echo "::set-env name=HUGO_VERSION::$HUGO_VERSION"
+        echo "::set-output name=VERSION::$HUGO_VERSION"
     - name: Get latest package version
+      id: package_version
       run: |
-        PACKAGE_VERSION=v$(npm show hugo-extended version)  # prepend v to match above format
+        PACKAGE_VERSION=$(npm show hugo-extended version)
-        echo "::set-env name=PACKAGE_VERSION::$PACKAGE_VERSION"
+        echo "::set-output name=VERSION::$PACKAGE_VERSION"
     - name: Compare versions
+      id: update
       run: |
-        echo "Current Hugo version is $HUGO_VERSION."
+        echo "Current package version is v${{ steps.package_version.outputs.VERSION }}."
-        echo "Current package version is $PACKAGE_VERSION."
+        echo "Current Hugo version is v${{ steps.hugo_version.outputs.VERSION }}."
 
-        if [ "$HUGO_VERSION" != "$PACKAGE_VERSION" ]
+        if [ "${{ steps.hugo_version.outputs.VERSION }}" != "${{ steps.package_version.outputs.VERSION }}" ]
         then
           echo "🚨 Needs updating!"
-          echo "::set-env name=UPDATE_AVAILABLE::true"
+          echo "::set-output name=UPDATE_AVAILABLE::true"
           exit 1
         else
           echo "✅ All good for now."
-          echo "::set-env name=UPDATE_AVAILABLE::false"
+          echo "::set-output name=UPDATE_AVAILABLE::false"
           exit 0
         fi
+
+# TODO: Automatically bump npm package, commit back to repo, and publish new version.