Update publish to Java 11

Author: abnegate

.github/workflows/publish.yml

@@ -12,10 +12,10 @@ jobs:
     steps:
       - name: Check out code
         uses: actions/checkout@v2
-      - name: Set up JDK 1.8
+      - name: Set up JDK 11
         uses: actions/setup-java@v1
         with:
-          java-version: 1.8
+          java-version: 11
         # Base64 decodes and pipes the GPG key content into the secret file
       - name: Prepare environment
         env:
@@ -41,4 +41,4 @@ jobs:
           SIGNING_KEY_ID: ${{ secrets.SIGNING_KEY_ID }}
           SIGNING_PASSWORD: ${{ secrets.SIGNING_PASSWORD }}
           SIGNING_SECRET_KEY_RING_FILE: ${{ secrets.SIGNING_SECRET_KEY_RING_FILE }}
-          SONATYPE_STAGING_PROFILE_ID: ${{ secrets.SONATYPE_STAGING_PROFILE_ID }}
+          SONATYPE_STAGING_PROFILE_ID: ${{ secrets.SONATYPE_STAGING_PROFILE_ID }}