deps: update dependency com.google.cloud:google-cloud-core to v2.5.3 (#789)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-core](https://togithub.com/googleapis/java-core) | `2.5.1` -> `2.5.3` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.5.3/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.5.3/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.5.3/compatibility-slim/2.5.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.5.3/confidence-slim/2.5.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/java-core</summary>

### [`v2.5.3`](https://togithub.com/googleapis/java-core/blob/HEAD/CHANGELOG.md#&#8203;253-httpsgithubcomgoogleapisjava-corecomparev252v253-2022-02-10)

[Compare Source](https://togithub.com/googleapis/java-core/compare/v2.5.2...v2.5.3)

### [`v2.5.2`](https://togithub.com/googleapis/java-core/blob/HEAD/CHANGELOG.md#&#8203;252-httpsgithubcomgoogleapisjava-corecomparev251v252-2022-02-09)

[Compare Source](https://togithub.com/googleapis/java-core/compare/v2.5.1...v2.5.2)

</details>

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Author: renovate-bot

samples/install-without-bom/pom.xml

@@ -36,7 +36,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.5.1</version>
+      <version>2.5.3</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>

samples/snapshot/pom.xml

@@ -35,7 +35,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-core</artifactId>
-      <version>2.5.1</version>
+      <version>2.5.3</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>