chore: regen admin

[mutianf]

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:

• Make sure to open an issue as a bug/issue before writing your code! That way we can discuss the change, evaluate designs, and agree on the general idea
• Ensure the tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)
• Rollback plan is reviewed and LGTMed
• All new data plane features have a completed end to end testing plan

Fixes #<issue_number_goes_here> ☕️

If you write sample code, please follow the samples format.

[generated-files-bot]

Warning: This pull request is touching the following templated files:

• google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableInstanceAdminStubSettings.java
• google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/BigtableTableAdminStubSettings.java
• google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableInstanceAdminStub.java
• google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/stub/GrpcBigtableTableAdminStub.java
• google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/BigtableStubSettings.java
• google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/GrpcBigtableStub.java

[blakeli0]

The generation PR should contain all the changes already. We also tagged the graalvm image, the tests should be passing now.