Rollup merge of rust-lang#131682 - jieyouxu:compiletest-label, r=Zalathar

Tag PRs affecting compiletest with `A-compiletest`

Author: matthiaskrgr

triagebot.toml

@@ -431,6 +431,11 @@ trigger_files = [
     "src/tools/run-make-support"
 ]
 
+[autolabel."A-compiletest"]
+trigger_files = [
+    "src/tools/compiletest"
+]
+
 [notify-zulip."I-prioritize"]
 zulip_stream = 245100 # #t-compiler/wg-prioritization/alerts
 topic = "#{number} {title}"