deps: update dependency io.grafeas:grafeas to v2.4.5 (#940)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [io.grafeas:grafeas](https://togithub.com/googleapis/google-cloud-java/tree/master/google-cloud-clients/grafeas) ([source](https://togithub.com/googleapis/java-grafeas)) | `2.4.4` -> `2.4.5` | [![age](https://badges.renovateapi.com/packages/maven/io.grafeas:grafeas/2.4.5/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/io.grafeas:grafeas/2.4.5/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/io.grafeas:grafeas/2.4.5/compatibility-slim/2.4.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/io.grafeas:grafeas/2.4.5/confidence-slim/2.4.4)](https://docs.renovatebot.com/merge-confidence/) |

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pom.xml

@@ -101,7 +101,7 @@
       <dependency>
         <groupId>io.grafeas</groupId>
         <artifactId>grafeas</artifactId>
-        <version>2.4.4</version>
+        <version>2.4.5</version>
       </dependency>
       <!-- TODO: Until gax-grpc && grafeas align  -->