build(deps): bump Microsoft.AppCenter.Analytics in /src

Bumps Microsoft.AppCenter.Analytics from 4.3.0 to 4.4.0.

---
updated-dependencies:
- dependency-name: Microsoft.AppCenter.Analytics
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

src/Splat.AppCenter/Splat.AppCenter.csproj

@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AppCenter.Analytics" Version="4.3.0" />
+    <PackageReference Include="Microsoft.AppCenter.Analytics" Version="4.4.0" />
     <PackageReference Include="Microsoft.AppCenter.Crashes" Version="4.3.0" />
   </ItemGroup>