Bump AkkaHostingVersion from 1.5.8.1 to 1.5.12 (#243)

Bumps `AkkaHostingVersion` from 1.5.8.1 to 1.5.12.

Updates `Akka.Cluster.Hosting` from 1.5.8.1 to 1.5.12
- [Release notes](https://github.com/akkadotnet/Akka.Hosting/releases)
- [Changelog](https://github.com/akkadotnet/Akka.Hosting/blob/dev/RELEASE_NOTES.md)
- [Commits](akkadotnet/Akka.Hosting@1.5.8.1...1.5.12)

Updates `Akka.Hosting` from 1.5.8.1 to 1.5.12
- [Release notes](https://github.com/akkadotnet/Akka.Hosting/releases)
- [Changelog](https://github.com/akkadotnet/Akka.Hosting/blob/dev/RELEASE_NOTES.md)
- [Commits](akkadotnet/Akka.Hosting@1.5.8.1...1.5.12)

Updates `Akka.Persistence.Hosting` from 1.5.8.1 to 1.5.12
- [Release notes](https://github.com/akkadotnet/Akka.Hosting/releases)
- [Changelog](https://github.com/akkadotnet/Akka.Hosting/blob/dev/RELEASE_NOTES.md)
- [Commits](akkadotnet/Akka.Hosting@1.5.8.1...1.5.12)

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

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

src/Directory.Build.props

@@ -26,7 +26,7 @@
     <CoverletVersion>3.2.0</CoverletVersion>
     <FluentAssertionVersion>6.11.0</FluentAssertionVersion>
     <AkkaVersion>1.5.10</AkkaVersion>
-    <AkkaHostingVersion>1.5.8.1</AkkaHostingVersion>
+    <AkkaHostingVersion>1.5.12</AkkaHostingVersion>
     <FluentAssertionVersion>6.10.0</FluentAssertionVersion>
     <NetCoreTestVersion>netcoreapp3.1</NetCoreTestVersion>
     <NetTestVersion>net6.0</NetTestVersion>