devel/rubygem-opentelemetry-registry: Update to 0.3.1

Changes:	https://github.com/open-telemetry/opentelemetry-ruby/releases
		https://github.com/open-telemetry/opentelemetry-ruby/blob/main/registry/CHANGELOG.md

devel/rubygem-opentelemetry-registry/Makefile

 PORTNAME=	opentelemetry-registry
-PORTVERSION=	0.3.0
+PORTVERSION=	0.3.1
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 

devel/rubygem-opentelemetry-registry/distinfo

-TIMESTAMP = 1697463044
-SHA256 (rubygem/opentelemetry-registry-0.3.0.gem) = 116ab6114a706340900718298c126f720e50b1ef3cfdbe5997611ff232fe6822
-SIZE (rubygem/opentelemetry-registry-0.3.0.gem) = 10752
+TIMESTAMP = 1711466366
+SHA256 (rubygem/opentelemetry-registry-0.3.1.gem) = 73a48234635b0ed1c75e4b5fb267fb3004baf616d43fe38e8380ecbb933d88df
+SIZE (rubygem/opentelemetry-registry-0.3.1.gem) = 10752