test: Update grpc, all gems

Previously, an uninitialized constant error for GRPC would raise for
instrumentation-all tests

Author: kaylareopelle

instrumentation/all/Gemfile

@@ -29,7 +29,7 @@ group :test do
      .sort
      .each { |dir| gem "opentelemetry-helpers-#{dir}", path: "../../helpers/#{dir}" }
 
-  excluded_instrumentations = %w[. .. all grpc]
+  excluded_instrumentations = %w[. .. all]
   Dir.entries('../')
      .select { |entry| File.directory?(File.join('../', entry)) }
      .reject { |entry| excluded_instrumentations.include?(entry) }

instrumentation/grpc/lib/opentelemetry/instrumentation/grpc.rb

@@ -18,4 +18,3 @@ class Error < StandardError; end
 
 require_relative 'grpc/instrumentation'
 require_relative 'grpc/version'
-require_relative 'grpc/interceptors/client_tracer'

instrumentation/grpc/test/opentelemetry/instrumentation/grpc/interceptors/client_tracer_test.rb

@@ -6,6 +6,7 @@
 
 require_relative '../../../../test_helper'
 require_relative '../../../../support/grpc_server_runner'
+require_relative '../../../../../lib/opentelemetry/instrumentation/grpc/interceptors/client_tracer'
 
 describe OpenTelemetry::Instrumentation::Grpc::Interceptors::ClientTracer do
   let(:instrumentation) { OpenTelemetry::Instrumentation::Grpc::Instrumentation.instance }