Github build: use go-offline in prepare phase

Author: jknack

.github/workflows/full-build.yml

@@ -19,7 +19,7 @@ jobs:
         with:
           java-version: ${{ matrix.java_version }}
       - name: Install
-        run: mvn -DskipTests=true clean install -q -pl '!docs,!examples' -P checkstyle
+        run: mvn -DskipTests=true clean install checkstyle:checkstyle -q -pl '!docs,!examples' -P checkstyle
       - name: Build
         run: mvn checkstyle:checkstyle package -pl '!docs,!examples' -P checkstyle
         env:

.github/workflows/quick-build.yml

@@ -20,9 +20,9 @@ jobs:
         with:
           java-version: ${{ matrix.java_version }}
       - name: Install
-        run: mvn dependency:go-offline -q -pl '!docs,!examples' -P checkstyle
+        run: mvn -DskipTests=true clean install checkstyle:checkstyle -q -pl '!docs,!examples' -P checkstyle
       - name: Build
-        run: mvn clean checkstyle:checkstyle package -pl '!docs,!examples' -P checkstyle
+        run: mvn checkstyle:checkstyle package -pl '!docs,!examples' -P checkstyle
         env:
           BUILD_PORT: 0
           BUILD_SECURE_PORT: 0