Bump OpenTelemetry.Instrumentation.Http from 1.10.0 to 1.12.0 (#226)

Bumps [OpenTelemetry.Instrumentation.Http](https://github.com/open-telemetry/opentelemetry-dotnet-contrib) from 1.10.0 to 1.12.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/releases)
- [Commits](open-telemetry/opentelemetry-dotnet-contrib@Exporter.Geneva-1.10.0...Exporter.Geneva-1.12.0)

---
updated-dependencies:
- dependency-name: OpenTelemetry.Instrumentation.Http
  dependency-version: 1.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -55,7 +55,7 @@
   <!-- OTEL Package Versions -->
   <ItemGroup>
     <PackageVersion Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.11.1" />
-    <PackageVersion Include="OpenTelemetry.Instrumentation.Http" Version="1.10.0" />
+    <PackageVersion Include="OpenTelemetry.Instrumentation.Http" Version="1.12.0" />
     <PackageVersion Include="OpenTelemetry.Instrumentation.Runtime" Version="1.12.0" />
     <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.12.0" />
     <PackageVersion Include="OpenTelemetry.Extensions.Hosting" Version="1.10.0" />