build(deps): bump Microsoft.AppCenter.Analytics in /src (#941)

Bumps Microsoft.AppCenter.Analytics from 4.5.1 to 4.5.3.

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

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src/Splat.AppCenter/Splat.AppCenter.csproj

@@ -13,7 +13,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AppCenter.Analytics" Version="4.5.1" />
+    <PackageReference Include="Microsoft.AppCenter.Analytics" Version="4.5.3" />
     <PackageReference Include="Microsoft.AppCenter.Crashes" Version="4.5.1" />
   </ItemGroup>