Update Microsoft.Build.Utilities.Core to 17.14.7, 17.14.8

---
updated-dependencies:
- dependency-name: Microsoft.Build.Utilities.Core
  dependency-version: 17.14.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: Microsoft.Build.Utilities.Core
  dependency-version: 17.14.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: MSBuild.ProjectCreation
  dependency-version: 14.0.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: System.Collections.Immutable
  dependency-version: 9.0.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: System.Collections.Immutable
  dependency-version: 9.0.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: System.Reflection.Metadata
  dependency-version: 9.0.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -25,7 +25,7 @@
     <PackageVersion Include="MSBuild.ProjectCreation" Version="14.0.0" />
     <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="9.0.5" />
     <PackageVersion Include="Microsoft.Build" Version="17.12.6" />
-    <PackageVersion Include="Microsoft.Build.Utilities.Core" Version="17.14.7" />
+    <PackageVersion Include="Microsoft.Build.Utilities.Core" Version="17.14.8" />
     <PackageVersion Include="Microsoft.Extensions.Configuration.CommandLine" Version="9.0.5" />
     <PackageVersion Include="Microsoft.Extensions.FileSystemGlobbing" Version="9.0.5" />
     <PackageVersion Include="Microsoft.Extensions.Hosting" Version="9.0.5" />