maint(deps): bump Npgsql.OpenTelemetry from 6.0.10 to 6.0.12

Bumps [Npgsql.OpenTelemetry](https://github.com/npgsql/npgsql) from 6.0.10 to 6.0.12.
- [Release notes](https://github.com/npgsql/npgsql/releases)
- [Commits](npgsql/npgsql@v6.0.10...v6.0.12)

---
updated-dependencies:
- dependency-name: Npgsql.OpenTelemetry
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/Honeycomb.OpenTelemetry.CommonInstrumentations/Honeycomb.OpenTelemetry.CommonInstrumentations.csproj

@@ -42,7 +42,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Npgsql.OpenTelemetry" Version="6.0.10" />
+    <PackageReference Include="Npgsql.OpenTelemetry" Version="6.0.12" />
     <PackageReference Include="OpenTelemetry.Instrumentation.EntityFrameworkCore" Version="1.0.0-beta.8" />
     <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.6.0-beta.3" />
     <PackageReference Include="OpenTelemetry.Instrumentation.MySqlData" Version="1.0.0-beta.7" />