chore(deps): bump Microsoft.Extensions.DependencyInjection (aws#1728)

Bumps [Microsoft.Extensions.DependencyInjection](https://github.com/aspnet/Extensions) from 3.1.4 to 3.1.5.
- [Release notes](https://github.com/aspnet/Extensions/releases)
- [Commits](dotnet/extensions@v3.1.4...v3.1.5)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

packages/@jsii/Directory.Build.targets

@@ -3,7 +3,7 @@
     <!-- Central configuration of dependency versions for all DotNet packages -->
 
     <PackageReference Update="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="3.6.0" />
-    <PackageReference Update="Microsoft.Extensions.DependencyInjection" Version="3.1.4" />
+    <PackageReference Update="Microsoft.Extensions.DependencyInjection" Version="3.1.5" />
     <PackageReference Update="Microsoft.Extensions.Logging" Version="3.1.4" />
     <PackageReference Update="Microsoft.Extensions.Logging.Console" Version="3.1.4" />