Bump actions/checkout from 4.0.0 to 4.1.0 (#7601)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.0.0 to 4.1.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@3df4ab1...8ade135)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Allow nullable acc. type on Observable.collect too (supplement #7590)

3.x: Fix Single.timeout race condition (#7515)

3.x: Fix Single.timeout race condition (#7515)

Bump mockito-core from 4.5.1 to 4.6.0 (#7426)

Bumps [mockito-core](https://github.com/mockito/mockito) from 4.5.1 to 4.6.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v4.5.1...v4.6.0)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Upgrade to Gradle 7.4.1 (#7402)

via

```
gradlew wrapper --gradle-version=7.4.1
```

Bump mockito-core from 4.0.0 to 4.1.0 (#7363)

Bumps [mockito-core](https://github.com/mockito/mockito) from 4.0.0 to 4.1.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v4.0.0...v4.1.0)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bump mockito-core from 3.12.4 to 4.0.0 (#7350)

Bumps [mockito-core](https://github.com/mockito/mockito) from 3.12.4 to 4.0.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v3.12.4...v4.0.0)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-core
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Align hasCustomOnError behavior of CallbackCompletableObserver with L…

…ambdaObserver, ConsumerSingleObserver and so on (#7326)

Co-authored-by: zhuwenbo <[email protected]>

Bump gradle to 7.1.1 (#7307)

* Bump gradle to 7.1.1

* Execute `gradlew wrapper`