[renovate] Update module github.com/hashicorp/go-plugin to v1.6.0

This MR contains the following updates:

Package	Type	Update	Change
github.com/hashicorp/go-plugin	require	minor	v1.4.10 -> v1.6.0

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go.mod

@@ -88,7 +88,7 @@ require (
 	buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go v1.36.4-20241127180247-a33202765966.1
 	github.com/bufbuild/protovalidate-go v0.8.2
 	github.com/hashicorp/go-multierror v1.1.1
-	github.com/hashicorp/go-plugin v1.4.10
+	github.com/hashicorp/go-plugin v1.6.3
 	github.com/lesismal/nbio v1.6.2
 	go.mongodb.org/mongo-driver v1.17.3
 	google.golang.org/genproto/googleapis/api v0.0.0-20250303144028-a0af3efb3deb