feat: Remove use of deprecated gradle command in java README (#1196)

.github/.OwlBot.lock.yaml

@@ -1,3 +1,3 @@
 docker:
   image: gcr.io/repo-automation-bots/owlbot-java:latest
-  digest: sha256:677e79291a12251a7c7e9c24db87f50ae0428bbb79c2bebc50e4fc5e9ed1ee32
+  digest: sha256:8a486672c9a4ae5e7d55b9ac252ce1741582b8c2ceeda40efa32376325809928

.github/workflows/ci.yaml

@@ -42,19 +42,6 @@ jobs:
         java-version: ${{matrix.java}}
     - run: java -version
     - run: .kokoro/dependencies.sh
-  linkage-monitor:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-java@v1
-      with:
-        java-version: 8
-    - run: java -version
-    - name: Install artifacts to local Maven repository
-      run: .kokoro/build.sh
-      shell: bash
-    - name: Validate any conflicts with regard to com.google.cloud:libraries-bom (latest release)
-      uses: GoogleCloudPlatform/cloud-opensource-java/linkage-monitor@v1-linkagemonitor
   lint:
     runs-on: ubuntu-latest
     steps:

README.md

@@ -30,7 +30,7 @@ If you are using Maven, add this to your pom.xml file:
 If you are using Gradle without BOM, add this to your dependencies
 
 ```Groovy
-compile 'com.google.cloud:google-cloud-gkehub:0.4.0'
+implementation 'com.google.cloud:google-cloud-gkehub:0.4.0'
 ```
 
 If you are using SBT, add this to your dependencies