deps: update bigtable.version to v2.9.0 (#3666)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-bigtable-deps-bom](https://togithub.com/googleapis/java-bigtable) | `2.8.0` -> `2.9.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable-deps-bom/2.9.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable-deps-bom/2.9.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable-deps-bom/2.9.0/compatibility-slim/2.8.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable-deps-bom/2.9.0/confidence-slim/2.8.0)](https://docs.renovatebot.com/merge-confidence/) |
| [com.google.cloud:google-cloud-bigtable-bom](https://togithub.com/googleapis/java-bigtable) | `2.8.0` -> `2.9.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable-bom/2.9.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable-bom/2.9.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable-bom/2.9.0/compatibility-slim/2.8.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable-bom/2.9.0/confidence-slim/2.8.0)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

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

### [`v2.9.0`](https://togithub.com/googleapis/java-bigtable/blob/HEAD/CHANGELOG.md#&#8203;290-httpsgithubcomgoogleapisjava-bigtablecomparev280v290-2022-06-30)

[Compare Source](https://togithub.com/googleapis/java-bigtable/compare/v2.8.0...v2.9.0)

##### Features

-   add built-in metric constants ([#&#8203;1243](https://togithub.com/googleapis/java-bigtable/issues/1243)) ([b1fc00a](https://togithub.com/googleapis/java-bigtable/commit/b1fc00aa09129185b4e4db8edb9c4af2dbfd1ec8))
-   **generated:** Add storage_utilization_gib_per_node to Autoscaling target ([a4c6621](https://togithub.com/googleapis/java-bigtable/commit/a4c662153c98f8043059a068a66d784761b7c2cb))
-   **generated:** Cloud Bigtable Undelete Table service and message proto files ([a4c6621](https://togithub.com/googleapis/java-bigtable/commit/a4c662153c98f8043059a068a66d784761b7c2cb))
-   update tracers to use built in metrics ([#&#8203;1244](https://togithub.com/googleapis/java-bigtable/issues/1244)) ([df77560](https://togithub.com/googleapis/java-bigtable/commit/df77560debadec8b3aecc08e95a58558c418df86))

##### Bug Fixes

-   fix flaky test ([#&#8203;1293](https://togithub.com/googleapis/java-bigtable/issues/1293)) ([146c824](https://togithub.com/googleapis/java-bigtable/commit/146c824962b48b2023ddb93d92e4a61297722f0f))
-   remove the shaded profile from root pom ([#&#8203;1274](https://togithub.com/googleapis/java-bigtable/issues/1274)) ([5eafcc3](https://togithub.com/googleapis/java-bigtable/commit/5eafcc3be3986692e64c95dcfc0d675208f2218c))
-   rename HeaderTracer callables to BigtableTracer callables ([#&#8203;1276](https://togithub.com/googleapis/java-bigtable/issues/1276)) ([e0bd6c9](https://togithub.com/googleapis/java-bigtable/commit/e0bd6c922ed2adfc8d6dddeced84cb87fc9f2e91))
-   rename response observer and callbacks ([#&#8203;1291](https://togithub.com/googleapis/java-bigtable/issues/1291)) ([2705a47](https://togithub.com/googleapis/java-bigtable/commit/2705a477f70247f16401901be9e0cd38733bdd2f))

##### Documentation

-   **sample:** update README for native image sample ([#&#8203;1281](https://togithub.com/googleapis/java-bigtable/issues/1281)) ([4a3a2c9](https://togithub.com/googleapis/java-bigtable/commit/4a3a2c947642678c3011db616ebe7cbaed677f96))

##### Dependencies

-   update dependency com.google.cloud:google-cloud-shared-dependencies to v2.13.0 ([#&#8203;1285](https://togithub.com/googleapis/java-bigtable/issues/1285)) ([1dc7787](https://togithub.com/googleapis/java-bigtable/commit/1dc77879ea51fd397b75020a16728adec72f1b9b))
-   update dependency org.graalvm.buildtools:junit-platform-native to v0.9.12 ([#&#8203;1283](https://togithub.com/googleapis/java-bigtable/issues/1283)) ([ba7844a](https://togithub.com/googleapis/java-bigtable/commit/ba7844acb6a4a3c47f1fc12b426f517b7fe3e55e))
-   update dependency org.graalvm.buildtools:native-maven-plugin to v0.9.12 ([#&#8203;1284](https://togithub.com/googleapis/java-bigtable/issues/1284)) ([75d0066](https://togithub.com/googleapis/java-bigtable/commit/75d006601e51263786f38b445a9cc6f08cbee403))

</details>

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pom.xml

@@ -55,7 +55,7 @@ limitations under the License.
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
     <!-- core dependency versions -->
-    <bigtable.version>2.8.0</bigtable.version>
+    <bigtable.version>2.9.0</bigtable.version>
     <bigtable-client-core.version>1.26.3</bigtable-client-core.version>
     <grpc-conscrypt.version>2.5.1</grpc-conscrypt.version>
     <!--  keeping at this version to align with hbase-->