Bump AkkaVersion from 1.5.17.1 to 1.5.18 (#381)

Bumps `AkkaVersion` from 1.5.17.1 to 1.5.18.

Updates `Akka.Persistence.Query` from 1.5.17.1 to 1.5.18
- [Release notes](https://github.com/akkadotnet/akka.net/releases)
- [Changelog](https://github.com/akkadotnet/akka.net/blob/dev/RELEASE_NOTES.md)
- [Commits](akkadotnet/akka.net@1.5.17.1...1.5.18)

Updates `Akka.Cluster.Sharding` from 1.5.17.1 to 1.5.18
- [Release notes](https://github.com/akkadotnet/akka.net/releases)
- [Changelog](https://github.com/akkadotnet/akka.net/blob/dev/RELEASE_NOTES.md)
- [Commits](akkadotnet/akka.net@1.5.17.1...1.5.18)

Updates `Akka.Persistence.TCK` from 1.5.17.1 to 1.5.18
- [Release notes](https://github.com/akkadotnet/akka.net/releases)
- [Changelog](https://github.com/akkadotnet/akka.net/blob/dev/RELEASE_NOTES.md)
- [Commits](akkadotnet/akka.net@1.5.17.1...1.5.18)

---
updated-dependencies:
- dependency-name: Akka.Persistence.Query
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: Akka.Cluster.Sharding
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: Akka.Persistence.TCK
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/Directory.Packages.props

@@ -1,7 +1,7 @@
 <Project>
   <PropertyGroup>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
-	  <AkkaVersion>1.5.17.1</AkkaVersion>
+	  <AkkaVersion>1.5.18</AkkaVersion>
 	  <AkkaHostingVersion>1.5.17.1</AkkaHostingVersion>
   </PropertyGroup>
   <!-- App dependencies -->