deps: update dependency com.google.http-client:google-http-client-bom…

… to v1.39.1 (#309)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.http-client:google-http-client-bom](https://togithub.com/googleapis/google-http-java-client) | `1.39.0` -> `1.39.1` | [![age](https://badges.renovateapi.com/packages/maven/com.google.http-client:google-http-client-bom/1.39.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.http-client:google-http-client-bom/1.39.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.http-client:google-http-client-bom/1.39.1/compatibility-slim/1.39.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.http-client:google-http-client-bom/1.39.1/confidence-slim/1.39.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/google-http-java-client</summary>

### [`v1.39.1`](https://togithub.com/googleapis/google-http-java-client/blob/master/CHANGELOG.md#&#8203;1391-httpswwwgithubcomgoogleapisgoogle-http-java-clientcomparev1390v1391-2021-03-15)

[Compare Source](https://togithub.com/googleapis/google-http-java-client/compare/v1.39.0...v1.39.1)

</details>

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java-shared-dependencies/pom.xml

@@ -63,7 +63,7 @@
     <google.common-protos.version>2.1.0</google.common-protos.version>
     <google.core.version>1.94.4</google.core.version>
     <google.auth.version>0.24.1</google.auth.version>
-    <google.http-client.version>1.39.0</google.http-client.version>
+    <google.http-client.version>1.39.1</google.http-client.version>
     <google.api-client.version>1.31.3</google.api-client.version>
     <gson.version>2.8.6</gson.version>
     <threeten.version>1.5.0</threeten.version>