Fix javadoc build (#529)

Signed-off-by: Pierangelo Di Pilato <pierdipi@redhat.com>

Author: pierDipi

.github/workflows/branch.yaml

@@ -20,8 +20,9 @@ jobs:
         with:
           java-version: ${{ matrix.java }}
       - run: |
-          mvn clean install -DskipTests -B
-          mvn verify -B
+          ./mvnw clean install -DskipTests -B
+          ./mvnw verify -B
+
   deploy:
     runs-on: ubuntu-latest
     name: Deploy
@@ -38,7 +39,7 @@ jobs:
           gpg-private-key: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }} # Value of the GPG private key to import
           gpg-passphrase: MAVEN_GPG_PASSPHRASE # env variable for GPG private key passphrase
       - name: Publish to Apache Maven Central
-        run: mvn clean deploy -Drelease -DskipTests -B
+        run: ./mvnw clean deploy -Drelease -DskipTests -B
         env:
           MAVEN_USERNAME: ${{ secrets.MAVEN_USERNAME }}
           MAVEN_CENTRAL_TOKEN: ${{ secrets.MAVEN_CENTRAL_TOKEN }}

.github/workflows/bump.yaml

@@ -19,7 +19,7 @@ jobs:
         with:
           java-version: 8
       - name: Bump version using Maven
-        run: 'mvn versions:set -DnewVersion=$NEW_VERSION -DgenerateBackupPoms=false -B'
+        run: './mvnw versions:set -DnewVersion=$NEW_VERSION -DgenerateBackupPoms=false -B'
       - name: Bump version in docs
         if: ${{ !endsWith(github.event.inputs.version, 'SNAPSHOT') }}
         run: 'find . -type f -name "*.md" -exec sed -i -e "s+<version>[a-zA-Z0-9.-]*<\/version>+<version>$NEW_VERSION</version>+g" {} +'

.github/workflows/pr.yaml

@@ -22,5 +22,6 @@ jobs:
           java-version: ${{ matrix.java }}
           distribution: 'temurin'
       - run: |
-          mvn clean install -DskipTests -B
-          mvn verify -B
+          ./mvnw clean install -DskipTests -B
+          ./mvnw verify -B
+          ./mvnw javadoc:javadoc

pom.xml

@@ -168,6 +168,7 @@
                         <link>https://qpid.apache.org/releases/qpid-proton-j-0.33.7/api/</link>
                         <link>https://fasterxml.github.io/jackson-databind/javadoc/2.10/</link>
                     </links>
+                    <source>8</source>
                 </configuration>
                 <executions>
                     <execution>