* test: backoff and retry for RESOURCE_EXHAUSTED when creating test instance

Do a backoff and retry if CreateInstance fails during integration tests.

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* fix: correctly unwrap SpannerException

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* test: back off more and retry more

* fix: prevent -1 as sleep value

* build: reuse test instance

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* build: try to get native build to pick up instance

* build: remove native image tests from required checks

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* test: ignore creation error

* test: use us-central config

* fix: fall back to first config for emulator

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

* fix: always allow metadata queries

Internal metadata queries should always be allowed, regardless of the type
of transaction that is currently running or any special mode that has been
set on the connection. Internal metadata queries are system queries that
are generated by a connection to return metadata to an application, for
example methods like getTables() in JDBC.

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* chore: run code formatter

* chore: make if condition more readable

Co-authored-by: Rajat Bhatta <[email protected]>

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Rajat Bhatta <[email protected]>

🤖 I have created a release *beep* *boop*
---


### Updating meta-information for bleeding-edge SNAPSHOT release.

---
This PR was generated with [Release Please](https://togithub.com/googleapis/release-please). See [documentation](https://togithub.com/googleapis/release-please#release-please).

🤖 I have created a release *beep* *boop*
---


## [6.45.1](https://togithub.com/googleapis/java-spanner/compare/v6.45.0...v6.45.1) (2023-08-11)


### Bug Fixes

* Always allow metadata queries ([#2580](https://togithub.com/googleapis/java-spanner/issues/2580)) ([ebb17fc](https://togithub.com/googleapis/java-spanner/commit/ebb17fc8aeac5fc75e4f135f33dba970f2480585))

---
This PR was generated with [Release Please](https://togithub.com/googleapis/release-please). See [documentation](https://togithub.com/googleapis/release-please#release-please).