chore(deps): Bump akka.version from 2.6.20 to 2.6.21 (#592)

* chore(deps): Bump akka.version from 2.6.20 to 2.6.21

Bumps `akka.version` from 2.6.20 to 2.6.21.

Updates `akka-stream_2.12` from 2.6.20 to 2.6.21
- [Release notes](https://github.com/akka/akka/releases)
- [Changelog](https://github.com/akka/akka/blob/main/akka-docs/release-train-issue-template.md)
- [Commits](akka/akka@v2.6.20...v2.6.21)

Updates `akka-testkit_2.12` from 2.6.20 to 2.6.21
- [Release notes](https://github.com/akka/akka/releases)
- [Changelog](https://github.com/akka/akka/blob/main/akka-docs/release-train-issue-template.md)
- [Commits](akka/akka@v2.6.20...v2.6.21)

Updates `akka-stream-testkit_2.12` from 2.6.20 to 2.6.21
- [Release notes](https://github.com/akka/akka/releases)
- [Changelog](https://github.com/akka/akka/blob/main/akka-docs/release-train-issue-template.md)
- [Commits](akka/akka@v2.6.20...v2.6.21)

Updates `akka-stream_2.13` from 2.6.20 to 2.6.21
- [Release notes](https://github.com/akka/akka/releases)
- [Changelog](https://github.com/akka/akka/blob/main/akka-docs/release-train-issue-template.md)
- [Commits](akka/akka@v2.6.20...v2.6.21)

Updates `akka-testkit_2.13` from 2.6.20 to 2.6.21
- [Release notes](https://github.com/akka/akka/releases)
- [Changelog](https://github.com/akka/akka/blob/main/akka-docs/release-train-issue-template.md)
- [Commits](akka/akka@v2.6.20...v2.6.21)

Updates `akka-stream-testkit_2.13` from 2.6.20 to 2.6.21
- [Release notes](https://github.com/akka/akka/releases)
- [Changelog](https://github.com/akka/akka/blob/main/akka-docs/release-train-issue-template.md)
- [Commits](akka/akka@v2.6.20...v2.6.21)

---
updated-dependencies:
- dependency-name: com.typesafe.akka:akka-stream_2.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: com.typesafe.akka:akka-testkit_2.12
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: com.typesafe.akka:akka-stream-testkit_2.12
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: com.typesafe.akka:akka-stream_2.13
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: com.typesafe.akka:akka-testkit_2.13
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: com.typesafe.akka:akka-stream-testkit_2.13
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* docs: Update CHANGELOG.md

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Jakub Bednář <jakub.bednar@gmail.com>

CHANGELOG.md

@@ -11,6 +11,7 @@ Update dependencies:
  - [#567](https://github.com/influxdata/influxdb-client-java/pull/567): `lombok` to `1.18.28`
  - [#582](https://github.com/influxdata/influxdb-client-java/pull/582): `scala-collection-compat_2.12` to `2.11.0`
  - [#581](https://github.com/influxdata/influxdb-client-java/pull/581): `micrometer-registry-influx` to `1.11.1`
+ - [#592](https://github.com/influxdata/influxdb-client-java/pull/592): `akka` to `2.6.21`
 
 #### Maven:
  - [#569](https://github.com/influxdata/influxdb-client-java/pull/569): `maven-enforcer-plugin` to `3.3.0`

pom.xml

@@ -121,7 +121,7 @@
  <plugin.site.version>3.12.1</plugin.site.version>
  <plugin.scala.version>4.8.1</plugin.scala.version>
 
- <akka.version>2.6.20</akka.version>
+ <akka.version>2.6.21</akka.version>
  <kotlin.version>1.8.21</kotlin.version>
  <junit-jupiter.version>5.9.1</junit-jupiter.version>
  <kotlin-coroutines.version>1.6.4</kotlin-coroutines.version>