fix(deps): update dependency com.google.api:gax to v2.12.2 (#6803)
fix(deps): update dependency com.google.api:gax to v2.12.2 (#6803)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.api:gax](https://togithub.com/googleapis/gax-java) | `2.8.1` -> `2.12.2` | [![age](https://badges.renovateapi.com/packages/maven/com.google.api:gax/2.12.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.api:gax/2.12.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.api:gax/2.12.2/compatibility-slim/2.8.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.api:gax/2.12.2/confidence-slim/2.8.1)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

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

### [`v2.12.2`](https://togithub.com/googleapis/gax-java/blob/HEAD/CHANGELOG.md#&#8203;2122-httpsgithubcomgoogleapisgax-javacomparev2121v2122-2022-02-09)

[Compare Source](https://togithub.com/googleapis/gax-java/compare/v2.12.1...v2.12.2)

### [`v2.12.1`](https://togithub.com/googleapis/gax-java/blob/HEAD/CHANGELOG.md#&#8203;2121-httpsgithubcomgoogleapisgax-javacomparev2120v2121-2022-02-09)

[Compare Source](https://togithub.com/googleapis/gax-java/compare/v2.12.0...v2.12.1)

### [`v2.12.0`](https://togithub.com/googleapis/gax-java/blob/HEAD/CHANGELOG.md#&#8203;2120-httpsgithubcomgoogleapisgax-javacomparev2110v2120-2022-01-28)

[Compare Source](https://togithub.com/googleapis/gax-java/compare/v2.11.0...v2.12.0)

##### Features

-   add REST interceptors infrastructure ([#&#8203;1607](https://togithub.com/googleapis/gax-java/issues/1607)) ([0572eed](https://togithub.com/googleapis/gax-java/commit/0572eed8aa29879c74794b22e8ae79e414dd5821))

### [`v2.11.0`](https://togithub.com/googleapis/gax-java/blob/HEAD/CHANGELOG.md#&#8203;2110-httpsgithubcomgoogleapisgax-javacomparev2100v2110-2022-01-27)

[Compare Source](https://togithub.com/googleapis/gax-java/compare/v2.10.0...v2.11.0)

##### Features

-   Add a builder to handle the common logic of extracting routing header values from request ([#&#8203;1598](https://togithub.com/googleapis/gax-java/issues/1598)) ([2836baa](https://togithub.com/googleapis/gax-java/commit/2836baafa1114761cffbfdd4aee2322a4a931f8f))

##### Dependencies

-   update dependency com_google_protobuf to 3.19.3 ([734906e](https://togithub.com/googleapis/gax-java/commit/734906efd15064ea0d36b308f217508c9bf5ed42))
-   update dependency com.google.api:api-common to 2.1.3 ([734906e](https://togithub.com/googleapis/gax-java/commit/734906efd15064ea0d36b308f217508c9bf5ed42))
-   update dependency com.google.api.grpc:grpc-google-common-protos to 2.7.2 ([734906e](https://togithub.com/googleapis/gax-java/commit/734906efd15064ea0d36b308f217508c9bf5ed42))
-   update dependency com.google.api.grpc:proto-google-common-protos to 2.7.2 ([734906e](https://togithub.com/googleapis/gax-java/commit/734906efd15064ea0d36b308f217508c9bf5ed42))
-   update dependency com.google.errorprone:error_prone_annotations to v2.11.0 ([734906e](https://togithub.com/googleapis/gax-java/commit/734906efd15064ea0d36b308f217508c9bf5ed42))
-   update dependency com.google.http-client:google-http-client to 1.41.2 ([734906e](https://togithub.com/googleapis/gax-java/commit/734906efd15064ea0d36b308f217508c9bf5ed42))
-   update dependency com.google.http-client:google-http-client-gson to 1.41.2 ([734906e](https://togithub.com/googleapis/gax-java/commit/734906efd15064ea0d36b308f217508c9bf5ed42))
-   update dependency io_grpc to 1.44.0 ([#&#8203;1610](https://togithub.com/googleapis/gax-java/issues/1610)) ([734906e](https://togithub.com/googleapis/gax-java/commit/734906efd15064ea0d36b308f217508c9bf5ed42))

### [`v2.10.0`](https://togithub.com/googleapis/gax-java/blob/HEAD/CHANGELOG.md#&#8203;2100-httpsgithubcomgoogleapisgax-javacomparev290v2100-2022-01-21)

[Compare Source](https://togithub.com/googleapis/gax-java/compare/v2.9.0...v2.10.0)

##### Features

-   add api key support ([#&#8203;1436](https://togithub.com/googleapis/gax-java/issues/1436)) ([5081ec6](https://togithub.com/googleapis/gax-java/commit/5081ec6541da8ca3f5a4c0d20aa75bd20010a642))
-   introduce HttpJsonClientCall, Listeners infrastructure and ServerStreaming support in REST transport ([#&#8203;1599](https://togithub.com/googleapis/gax-java/issues/1599)) ([3c97529](https://togithub.com/googleapis/gax-java/commit/3c97529b8bd0e8141c5d722f887cb7ae1ed30b69))

### [`v2.9.0`](https://togithub.com/googleapis/gax-java/blob/HEAD/CHANGELOG.md#&#8203;290-httpsgithubcomgoogleapisgax-javacomparev281v290-2022-01-14)

[Compare Source](https://togithub.com/googleapis/gax-java/compare/v2.8.1...v2.9.0)

##### Features

-   pass a CallCredentials to grpc-java for DirectPath ([#&#8203;1488](https://togithub.com/googleapis/gax-java/issues/1488)) ([4a7713a](https://togithub.com/googleapis/gax-java/commit/4a7713ad683e70380087437d6b52cbe3e115d1fb))

##### [2.8.1](https://www.github.com/googleapis/gax-java/compare/v2.8.0...v2.8.1) (2022-01-06)

##### Dependencies

-   update dependency com.google.api:api-common to 2.1.2 ([#&#8203;1590](https://www.togithub.com/googleapis/gax-java/issues/1590)) ([1b34870](https://www.github.com/googleapis/gax-java/commit/1b34870358a26bd4542594b6c746dca190f65d24))
-   update dependency com.google.auto.value:auto-value to v1.9 ([1b34870](https://www.github.com/googleapis/gax-java/commit/1b34870358a26bd4542594b6c746dca190f65d24))

</details>

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