update the 'opentelemetry-api' dependency to '~> 1.0'

Author: michal-kazmierczak

instrumentation/grpc/opentelemetry-instrumentation-grpc.gemspec

@@ -33,7 +33,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
 
   # Uncomment to register a new dependency of your gem
-  spec.add_dependency 'opentelemetry-api', '~> 1.2'
+  spec.add_dependency 'opentelemetry-api', '~> 1.0'
   spec.add_dependency 'opentelemetry-instrumentation-base', '~> 0.23.0'
   # For more information and examples about making a new gem, check out our
   # guide at: https://bundler.io/guides/creating_gem.html