Rollup merge of #154767 - jieyouxu:lib-tests, r=Mark-Simulacrum

triagebot: roll library reviewers for `{coretests,alloctests}`

Noticed in #154761 that we are currently rolling fallback reviewers for `library/{alloctests,coretests}`

r? libs

Author: JonathanBrouwer

triagebot.toml

@@ -1598,7 +1598,9 @@ dep-bumps = [
 "/compiler/rustc_type_ir" =                              ["compiler", "types"]
 "/compiler/rustc_public" =                               ["project-stable-mir"]
 "/library/alloc" =                                       ["libs"]
+"/library/alloctests" =                                  ["libs"]
 "/library/core" =                                        ["libs", "@scottmcm"]
+"/library/coretests" =                                   ["libs"]
 "/library/panic_abort" =                                 ["libs"]
 "/library/panic_unwind" =                                ["libs"]
 "/library/proc_macro" =                                  ["@petrochenkov"]