Bump MSTest.TestAdapter from 3.6.3 to 3.6.4

Bumps [MSTest.TestAdapter](https://github.com/microsoft/testfx) from 3.6.3 to 3.6.4.
- [Release notes](https://github.com/microsoft/testfx/releases)
- [Changelog](https://github.com/microsoft/testfx/blob/main/docs/Changelog.md)
- [Commits](microsoft/testfx@v3.6.3...v3.6.4)

---
updated-dependencies:
- dependency-name: MSTest.TestAdapter
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/Bicep.Types.Az.UnitTests/Bicep.Types.Az.UnitTests.csproj

@@ -8,7 +8,7 @@
   <ItemGroup>
     <PackageReference Include="FluentAssertions" Version="7.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.6.3" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.6.4" />
     <PackageReference Include="MSTest.TestFramework" Version="3.6.4" />
     <PackageReference Include="coverlet.collector" Version="6.0.2">
       <PrivateAssets>all</PrivateAssets>

src/Bicep.Types.Az.UnitTests/packages.lock.json

@@ -39,9 +39,9 @@
       },
       "MSTest.TestAdapter": {
         "type": "Direct",
-        "requested": "[3.6.3, )",
-        "resolved": "3.6.3",
-        "contentHash": "i3KbdAjLO0W9xlvbhZa9u0wh6X+VZ1yTBsUVlVKtx8B9CXa4rFXPcx3yPysB9gbALmhgAjFza4RRoNyXY9IoXQ==",
+        "requested": "[3.6.4, )",
+        "resolved": "3.6.4",
+        "contentHash": "YdwseRA+nDhRqD2oPHjCE4KzLEN5B10A61lOslE3N3OvUwHJ6ezyZZjYWf7mrZ8jckCcx/UlBclTzgWUpMpPQw==",
         "dependencies": {
           "Microsoft.Testing.Extensions.VSTestBridge": "1.4.3",
           "Microsoft.Testing.Platform.MSBuild": "1.4.3"