Update Antora Plugin to 1.0.0

Issue gh-2234

.github/workflows/deploy-reference.yml

@@ -1,33 +0,0 @@
-name: Build & Deploy Reference
-
-on:
-  repository_dispatch:
-    types: request-build-reference
-  schedule:
-    - cron: '0 10 * * *' # Once per day at 10am UTC
-  workflow_dispatch: # Manual trigger
-
-jobs:
-  deploy:
-    name: deploy
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Set up JDK 11
-        uses: actions/setup-java@v2
-        with:
-          java-version: '11'
-          distribution: 'adopt'
-          cache: gradle
-      - name: Validate Gradle wrapper
-        uses: gradle/wrapper-validation-action@e6e38bacfdf1a337459f332974bb2327a31aaf4b
-      - name: Build with Gradle
-        run: ./gradlew :spring-session-docs:antora --stacktrace
-      - name: Cleanup Gradle Cache
-        # Remove some files from the Gradle cache, so they aren't cached by GitHub Actions.
-        # Restoring these files from a GitHub Actions cache might cause problems for future builds.
-        run: |
-          rm -f ~/.gradle/caches/modules-2/modules-2.lock
-          rm -f ~/.gradle/caches/modules-2/gc.properties
-      - name: Deploy
-        run: ${GITHUB_WORKSPACE}/.github/actions/algolia-deploy.sh "${{ secrets.DOCS_USERNAME }}@${{ secrets.DOCS_HOST }}" "/opt/www/domains/spring.io/docs/htdocs/spring-session/reference/" "${{ secrets.DOCS_SSH_KEY }}" "${{ secrets.DOCS_SSH_HOST_KEY }}"