deps: update dependency com.google.cloud:google-cloud-dms-bom to v2.2.8 (#5297)
deps: update dependency com.google.cloud:google-cloud-dms-bom to v2.2.8 (#5297)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-dms-bom](https://togithub.com/googleapis/java-dms) | `2.2.6` -> `2.2.8` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-dms-bom/2.2.8/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-dms-bom/2.2.8/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-dms-bom/2.2.8/compatibility-slim/2.2.6)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-dms-bom/2.2.8/confidence-slim/2.2.6)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v2.2.8`](https://togithub.com/googleapis/java-dms/blob/HEAD/CHANGELOG.md#&#8203;228-httpsgithubcomgoogleapisjava-dmscomparev227v228-2022-10-05)

[Compare Source](https://togithub.com/googleapis/java-dms/compare/v2.2.7...v2.2.8)

##### Bug Fixes

-   update protobuf to v3.21.7 ([89f7092](https://togithub.com/googleapis/java-dms/commit/89f7092967434d6f61d12c53666d44ce39c74f22))

### [`v2.2.7`](https://togithub.com/googleapis/java-dms/blob/HEAD/CHANGELOG.md#&#8203;227-httpsgithubcomgoogleapisjava-dmscomparev226v227-2022-10-03)

[Compare Source](https://togithub.com/googleapis/java-dms/compare/v2.2.6...v2.2.7)

##### Dependencies

-   Update dependency com.google.cloud:google-cloud-shared-dependencies to v3.0.4 ([#&#8203;295](https://togithub.com/googleapis/java-dms/issues/295)) ([546d822](https://togithub.com/googleapis/java-dms/commit/546d822e260d02a27efe4036fc07365ea4123bd0))

</details>

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googleapis/java-cloud-bom,googleapis/java-cloud-bom,googleapis/java-cloud-bom,googleapis/java-cloud-bom