deps: update dependency com.google.cloud:google-cloud-trace to v2.4.0 (#2114)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-trace](https://togithub.com/googleapis/java-trace) ([source](https://togithub.com/googleapis/google-cloud-java)) | `2.3.7` -> `2.4.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-trace/2.4.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-trace/2.4.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-trace/2.4.0/compatibility-slim/2.3.7)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-trace/2.4.0/confidence-slim/2.3.7)](https://docs.renovatebot.com/merge-confidence/) |

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samples/install-without-bom/pom.xml

@@ -22,7 +22,7 @@
     <maven.compiler.source>1.8</maven.compiler.source>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <opencensus.version>0.31.1</opencensus.version>
-    <trace.version>2.3.7</trace.version>
+    <trace.version>2.4.0</trace.version>
     <cloudmonitoring.version>3.5.0</cloudmonitoring.version>
   </properties>
 

samples/snapshot/pom.xml

@@ -22,7 +22,7 @@
     <maven.compiler.source>1.8</maven.compiler.source>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <opencensus.version>0.31.1</opencensus.version>
-    <trace.version>2.3.7</trace.version>
+    <trace.version>2.4.0</trace.version>
     <cloudmonitoring.version>3.5.0</cloudmonitoring.version>
   </properties>