Bump NGitLab from 6.39.0 to 6.51.1 in /src

Bumps NGitLab from 6.39.0 to 6.51.1.

---
updated-dependencies:
- dependency-name: NGitLab
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/GitReleaseManager.Core/GitReleaseManager.Core.csproj

@@ -23,7 +23,7 @@
           <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
           <PrivateAssets>all</PrivateAssets>
         </PackageReference>
-        <PackageReference Include="NGitLab" Version="6.39.0" />
+        <PackageReference Include="NGitLab" Version="6.51.1" />
         <PackageReference Include="Octokit" Version="12.0.0" />
         <PackageReference Include="Scriban" Version="5.10.0" />
         <PackageReference Include="seriloganalyzer" Version="0.15.0" />

src/GitReleaseManager.Tool/GitReleaseManager.Tool.csproj

@@ -38,7 +38,7 @@
         <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         <PrivateAssets>all</PrivateAssets>
         </PackageReference>
-        <PackageReference Include="NGitLab" Version="6.39.0" />
+        <PackageReference Include="NGitLab" Version="6.51.1" />
         <PackageReference Include="Octokit" Version="12.0.0" />
         <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
         <PackageReference Include="Serilog.Sinks.Debug" Version="2.0.0" PrivateAssets="All" />