chore: release 6.0.0 (googleapis#994)

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chore: release 5.2.0 (googleapis#987)

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chore: release 5.1.0 (googleapis#927)

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chore(master): release 5.0.0 (googleapis#913)

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chore(master): release 4.0.2 (googleapis#902)

🤖 I have created a release \*beep\* \*boop\* 
---
### [4.0.2](https://www.github.com/googleapis/java-spanner/compare/v4.0.1...v4.0.2) (2021-02-23)


### Dependencies

* update dependency com.google.cloud:google-cloud-monitoring to v2.0.13 ([googleapis#901](https://www.github.com/googleapis/java-spanner/issues/901)) ([10749c7](https://www.github.com/googleapis/java-spanner/commit/10749c7a074d33c853b0f11a0e6c6ee5f09e75c9))
* update dependency com.google.cloud:google-cloud-trace to v1.2.12 ([googleapis#896](https://www.github.com/googleapis/java-spanner/issues/896)) ([84ee6e0](https://www.github.com/googleapis/java-spanner/commit/84ee6e0d442a29893e1ac77fa7882ed0407c9a7d))
---


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

chore(master): release 4.0.1 (googleapis#883)

🤖 I have created a release \*beep\* \*boop\* 
---
### [4.0.1](https://www.github.com/googleapis/java-spanner/compare/v4.0.0...v4.0.1) (2021-02-22)


### Bug Fixes

* wrong use of getRetryDelayInMillis() / 1000 in documentation and retry loops ([googleapis#885](https://www.github.com/googleapis/java-spanner/issues/885)) ([a55d7ce](https://www.github.com/googleapis/java-spanner/commit/a55d7ce64fff434151c1c3af0796d290e9db7470)), closes [googleapis#874](https://www.github.com/googleapis/java-spanner/issues/874)


### Documentation

* Add OpenCensus to OpenTelemetry shim to README ([googleapis#879](https://www.github.com/googleapis/java-spanner/issues/879)) ([b58d73d](https://www.github.com/googleapis/java-spanner/commit/b58d73ddb768c0d33d149ed8bc84f5af618514e1))


### Dependencies

* update dependency com.google.cloud:google-cloud-shared-dependencies to v0.19.0 ([googleapis#895](https://www.github.com/googleapis/java-spanner/issues/895)) ([e3e2c95](https://www.github.com/googleapis/java-spanner/commit/e3e2c95936f40a7954639a95c84cc9495e318e55))
---


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

chore(master): release 4.0.0 (googleapis#850)

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chore(3.1.x): release 3.1.4 (googleapis#860)

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chore: release 3.3.2 (googleapis#808)

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chore: release 3.3.1 (googleapis#793)

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