deps: update google.core.version (#599)

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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) | `2.4.0` -> `2.5.6` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.5.6/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.5.6/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.5.6/compatibility-slim/2.4.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core/2.5.6/confidence-slim/2.4.0)](https://docs.renovatebot.com/merge-confidence/) |
| [com.google.cloud:google-cloud-core-bom](https://togithub.com/googleapis/java-core) | `2.4.0` -> `2.5.5` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core-bom/2.5.5/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core-bom/2.5.5/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core-bom/2.5.5/compatibility-slim/2.4.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-core-bom/2.5.5/confidence-slim/2.4.0)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

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

### [`v2.5.6`](https://togithub.com/googleapis/java-core/blob/HEAD/CHANGELOG.md#&#8203;256-httpsgithubcomgoogleapisjava-corecomparev255v256-2022-03-01)

[Compare Source](https://togithub.com/googleapis/java-core/compare/v2.5.5...v2.5.6)

### [`v2.5.5`](https://togithub.com/googleapis/java-core/blob/HEAD/CHANGELOG.md#&#8203;255-httpsgithubcomgoogleapisjava-corecomparev254v255-2022-02-28)

[Compare Source](https://togithub.com/googleapis/java-core/compare/v2.5.4...v2.5.5)

### [`v2.5.4`](https://togithub.com/googleapis/java-core/blob/HEAD/CHANGELOG.md#&#8203;254-httpsgithubcomgoogleapisjava-corecomparev253v254-2022-02-11)

[Compare Source](https://togithub.com/googleapis/java-core/compare/v2.5.3...v2.5.4)

### [`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)

### [`v2.5.1`](https://togithub.com/googleapis/java-core/blob/HEAD/CHANGELOG.md#&#8203;251-httpsgithubcomgoogleapisjava-corecomparev250v251-2022-02-08)

[Compare Source](https://togithub.com/googleapis/java-core/compare/v2.5.0...v2.5.1)

### [`v2.5.0`](https://togithub.com/googleapis/java-core/blob/HEAD/CHANGELOG.md#&#8203;250-httpsgithubcomgoogleapisjava-corecomparev240v250-2022-02-02)

[Compare Source](https://togithub.com/googleapis/java-core/compare/v2.4.0...v2.5.0)

##### Features

-   add limit support to ReadChannel ([#&#8203;688](https://togithub.com/googleapis/java-core/issues/688)) ([476109e](https://togithub.com/googleapis/java-core/commit/476109e1943c1a9561cc636ffc64ab8cdd1888f9))

##### Bug Fixes

-   **java:** Initialize AsyncSSLPrivateKeyMethod (a grpc netty class) at run-time ([#&#8203;702](https://togithub.com/googleapis/java-core/issues/702)) ([24146a3](https://togithub.com/googleapis/java-core/commit/24146a35a10ae06238de9556c24dab5dbd3bcaff))

##### Dependencies

-   update dependency com.google.api:gax-bom to v2.12.0 ([#&#8203;698](https://togithub.com/googleapis/java-core/issues/698)) ([c10aab8](https://togithub.com/googleapis/java-core/commit/c10aab8a57ff0aad07a700540085e2ed7521b1a1))
-   update dependency com.google.protobuf:protobuf-bom to v3.19.4 ([#&#8203;699](https://togithub.com/googleapis/java-core/issues/699)) ([5d163f5](https://togithub.com/googleapis/java-core/commit/5d163f591547cd8e0e508b9c824a17da2074b264))

</details>

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first-party-dependencies/pom.xml

@@ -62,7 +62,7 @@
     <protobuf.version>3.19.4</protobuf.version>
     <google.api-common.version>2.1.4</google.api-common.version>
     <google.common-protos.version>2.7.4</google.common-protos.version>
-    <google.core.version>2.4.0</google.core.version>
+    <google.core.version>2.5.5</google.core.version>
     <google.auth.version>1.5.3</google.auth.version>
     <google.http-client.version>1.41.2</google.http-client.version>
     <google.oauth-client.version>1.33.1</google.oauth-client.version>