[deps]: Update AWSSDK.KeyManagementService to v4 (#395)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

version-bump/tests/fixtures/test.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="AWSSDK.KeyManagementService" Version="[3.7.504]" />
+    <PackageReference Include="AWSSDK.KeyManagementService" Version="[4.0.7]" />
     <PackageReference Include="Azure.Identity" Version="[1.17.0]" />
     <PackageReference Include="Azure.Security.KeyVault.Certificates" Version="[4.8.0]" />
     <PackageReference Include="Azure.Security.KeyVault.Keys" Version="[4.8.0]" />