Bump Akka from 1.5.39 to 1.5.48 (#56)

---
updated-dependencies:
- dependency-name: Akka
  dependency-version: 1.5.48
  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

@@ -3,7 +3,7 @@
         <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     </PropertyGroup>
     <ItemGroup Label="App">
-        <PackageVersion Include="Akka" Version="1.5.39"/>
+        <PackageVersion Include="Akka" Version="1.5.48"/>
         <PackageVersion Include="FluentAssertions" Version="7.0.0"/>
         <PackageVersion Include="Grynwald.MarkdownGenerator" Version="3.0.106"/>
         <PackageVersion Include="HtmlAgilityPack" Version="1.11.72"/>