Bump com.google.auth:google-auth-library-oauth2-http

Bumps com.google.auth:google-auth-library-oauth2-http from 1.16.1 to 1.20.0.

---
updated-dependencies:
- dependency-name: com.google.auth:google-auth-library-oauth2-http
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

gradle/libs.versions.toml

@@ -105,7 +105,7 @@ felixFramework = "org.apache.felix:org.apache.felix.framework:7.0.5"
 felixScr = "org.apache.felix:org.apache.felix.scr:2.2.2"
 gmetric4j = { module = "info.ganglia.gmetric4j:gmetric4j", version.ref = "gmetric4j" }
 googleCloudMonitoring = { module = "com.google.cloud:google-cloud-monitoring", version.ref = "google-cloud-monitoring" }
-googleOauth2Http = { module = "com.google.auth:google-auth-library-oauth2-http", version = "1.16.1"}
+googleOauth2Http = { module = "com.google.auth:google-auth-library-oauth2-http", version = "1.20.0"}
 grpcApi = { module = "io.grpc:grpc-api", version.ref = "grpc" }
 grpcCore = { module = "io.grpc:grpc-core", version.ref = "grpc" }
 grpcInprocess = { module = "io.grpc:grpc-inprocess", version.ref = "grpc" }