Bump Google.Protobuf from 3.33.2 to 3.33.4

---
updated-dependencies:
- dependency-name: Google.Protobuf
  dependency-version: 3.33.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -42,7 +42,7 @@
     <PackageVersion Include="System.ComponentModel.Annotations" Version="5.0.0" />
   </ItemGroup>
   <ItemGroup>
-    <PackageVersion Include="Google.Protobuf" Version="3.33.2" />
+    <PackageVersion Include="Google.Protobuf" Version="3.33.4" />
     <PackageVersion Include="Grpc.Core" Version="2.46.6" />
     <PackageVersion Include="Grpc.Net.Client" Version="2.67.0" />
     <PackageVersion Include="Grpc.Tools" Version="2.76.0" />