[Resources.Gcp] NugetAudit - fix dependencies with known vulnerabilities (open-telemetry#2055)

Author: Kielek

src/OpenTelemetry.Resources.Gcp/OpenTelemetry.Resources.Gcp.csproj

@@ -16,6 +16,8 @@
     <PackageReference Include="Google.Api.Gax" Version="4.8.0" />
     <PackageReference Include="OpenTelemetry" Version="$(OpenTelemetryCoreLatestVersion)" />
     <PackageReference Include="System.Text.Json" Version="4.7.2" />
+    <!-- System.Text.Encodings.Web is indirect reference. It is needed to upgrade it directly to avoid https://github.com/advisories/GHSA-ghhp-997w-qr28 -->
+    <PackageReference Include="System.Text.Encodings.Web" Version="4.7.2" />
   </ItemGroup>
 
   <ItemGroup>