chore(deps): update dependency junit:junit to v4.13.2 (#3347)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [junit:junit](http://junit.org) ([source](https://github.com/junit-team/junit4)) | `4.13.1` -> `4.13.2` | [![age](https://badges.renovateapi.com/packages/maven/junit:junit/4.13.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/junit:junit/4.13.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/junit:junit/4.13.2/compatibility-slim/4.13.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/junit:junit/4.13.2/confidence-slim/4.13.1)](https://docs.renovatebot.com/merge-confidence/) |
| [junit:junit](http://junit.org) ([source](https://github.com/junit-team/junit4)) | `4.13` -> `4.13.2` | [![age](https://badges.renovateapi.com/packages/maven/junit:junit/4.13.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/junit:junit/4.13.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/junit:junit/4.13.2/compatibility-slim/4.13)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/junit:junit/4.13.2/confidence-slim/4.13)](https://docs.renovatebot.com/merge-confidence/) |

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.circleci/discogapic_compute_build.gradle

@@ -27,7 +27,7 @@ dependencies {
     testCompile 'com.google.api:gax:1.42.0:testlib'
     compile 'com.google.api:gax-httpjson:0.59.0'
     testCompile 'com.google.api:gax-httpjson:0.59.0:testlib'
-    testCompile 'junit:junit:4.13'
+    testCompile 'junit:junit:4.13.2'
 }
 
 task smokeTest(type: Test) {

benchmark/clients/java/pubsub/pom.xml

@@ -41,7 +41,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.13</version>
+      <version>4.13.2</version>
       <scope>test</scope>
     </dependency>
   </dependencies>

showcase/java/build.gradle

@@ -42,6 +42,6 @@ dependencies {
     implementation 'com.google.cloud:gapic-google-cloud-showcase-v1beta1:0.0.0-SNAPSHOT'
     implementation "io.grpc:grpc-netty-shaded:1.13.1"
 
-    testImplementation 'junit:junit:4.13'
+    testImplementation 'junit:junit:4.13.2'
     testImplementation "com.google.truth:truth:1.0.1"
 }