chore(deps): update dependency com.google.cloud:libraries-bom to v26.…

…1.5 (googleapis#2170)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:libraries-bom](https://cloud.google.com/java/docs/bom) ([source](https://togithub.com/googleapis/java-cloud-bom)) | `26.1.4` -> `26.1.5` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/26.1.5/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/26.1.5/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/26.1.5/compatibility-slim/26.1.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/26.1.5/confidence-slim/26.1.4)](https://docs.renovatebot.com/merge-confidence/) |

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refactor: Minor refactoring

chore(main): release 6.25.5 (googleapis#1898)

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## [6.25.5](googleapis/java-spanner@v6.25.4...v6.25.5) (2022-05-31)


### Bug Fixes

* add configurations for Explain feature ([googleapis#1899](googleapis#1899)) ([86895b7](googleapis@86895b7))
* gracefully ignore RejectedExecutionException during Connection#close() ([googleapis#1887](googleapis#1887)) ([091bd1d](googleapis@091bd1d))

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chore(main): release 6.25.4 (googleapis#1896)

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### [6.25.4](googleapis/java-spanner@v6.25.3...v6.25.4) (2022-05-26)


### Dependencies

* update dependency org.graalvm.sdk:graal-sdk to v22.1.0.1 ([googleapis#1894](googleapis#1894)) ([cddb745](googleapis@cddb745))

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chore(main): release 6.25.3 (googleapis#1893)

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### [6.25.3](googleapis/java-spanner@v6.25.2...v6.25.3) (2022-05-25)


### Bug Fixes

* add native image configurations for Spanner classes ([googleapis#1858](googleapis#1858)) ([92d0292](googleapis@92d0292))

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chore(main): release 6.25.2 (googleapis#1891)

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### [6.25.2](googleapis/java-spanner@v6.25.1...v6.25.2) (2022-05-25)


### Dependencies

* update dependency com.google.cloud:google-cloud-monitoring to v3.3.0 ([googleapis#1888](googleapis#1888)) ([1b109e9](googleapis@1b109e9))
* update dependency com.google.cloud:google-cloud-trace to v2.2.0 ([googleapis#1889](googleapis#1889)) ([f89f70e](googleapis@f89f70e))

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chore(main): release 6.25.1 (googleapis#1884)

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### [6.25.1](googleapis/java-spanner@v6.25.0...v6.25.1) (2022-05-23)


### Dependencies

* update dependency org.openjdk.jmh:jmh-generator-annprocess to v1.35 ([googleapis#1790](googleapis#1790)) ([d68095b](googleapis@d68095b))

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chore(main): release 6.25.0 (googleapis#1878)

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chore(main): release 6.24.0 (googleapis#1846)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

chore(main): release 6.23.3 (googleapis#1836)

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### [6.23.3](googleapis/java-spanner@v6.23.2...v6.23.3) (2022-04-21)


### Dependencies

* update dependency com.google.cloud:google-cloud-shared-dependencies to v2.10.0 ([googleapis#1830](googleapis#1830)) ([3c55eb3](googleapis@3c55eb3))


### Documentation

* add samples for PostgreSQL ([googleapis#1700](googleapis#1700)) ([a024483](googleapis@a024483))

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