Merge pull request #2093 from m-ou-se/patch-1

Add permissions to libs-team repo

Author: Mark-Simulacrum

repos/rust-lang/libs-team.toml

@@ -5,4 +5,5 @@ bots = ["rustbot"]
 
 [access.teams]
 libs = "maintain"
-libs-api = "write"
+libs-api = "maintain"
+libs-contributors = "maintain"