test the "install" task

Author: stephengold

.github/workflows/push.yml

@@ -14,7 +14,7 @@ jobs:
           distribution: 'zulu'
           java-version: 8
       - uses: actions/checkout@v4
-      - run: ./gradlew build mergedJavadoc --console=plain --stacktrace
+      - run: ./gradlew build mergedJavadoc install --console=plain --stacktrace
 
   Java11-Linux:
     if: contains(toJson(github.event.commits), '[ci skip] ') == false
@@ -26,7 +26,7 @@ jobs:
           java-version: 11
       - uses: actions/checkout@v4
       - uses: gradle/actions/wrapper-validation@v4
-      - run: ./gradlew build mergedJavadoc --console=plain --stacktrace
+      - run: ./gradlew build mergedJavadoc install --console=plain --stacktrace
 
   Java17-MacOS:
     if: contains(toJson(github.event.commits), '[ci skip] ') == false
@@ -37,7 +37,7 @@ jobs:
           distribution: 'zulu'
           java-version: 17
       - uses: actions/checkout@v4
-      - run: ./gradlew build mergedJavadoc --console=plain --stacktrace
+      - run: ./gradlew build mergedJavadoc install --console=plain --stacktrace
 
   Java23-Windows:
     if: contains(toJson(github.event.commits), '[ci skip] ') == false
@@ -48,5 +48,5 @@ jobs:
           distribution: 'zulu'
           java-version: 23
       - uses: actions/checkout@v4
-      - run: ./gradlew build mergedJavadoc --console=plain --stacktrace
+      - run: ./gradlew build mergedJavadoc install --console=plain --stacktrace
         shell: bash