Bump StackExchange.Redis from 2.8.0 to 2.8.16 (#359)

Bumps [StackExchange.Redis](https://github.com/StackExchange/StackExchange.Redis) from 2.8.0 to 2.8.16.
- [Release notes](https://github.com/StackExchange/StackExchange.Redis/releases)
- [Changelog](https://github.com/StackExchange/StackExchange.Redis/blob/main/docs/ReleaseNotes.md)
- [Commits](StackExchange/StackExchange.Redis@2.8.0...2.8.16)

---
updated-dependencies:
- dependency-name: StackExchange.Redis
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -10,7 +10,7 @@
         <PackageVersion Include="Akka.Persistence.Hosting" Version="1.5.30" />
         <PackageVersion Include="Akka.Persistence.Query" Version="$(AkkaVersion)" />
         <PackageVersion Include="Akka.Streams" Version="$(AkkaVersion)" />
-        <PackageVersion Include="StackExchange.Redis" Version="2.8.0" />
+        <PackageVersion Include="StackExchange.Redis" Version="2.8.16" />
     </ItemGroup>
     <!-- Test dependencies -->
     <ItemGroup>