Rollup merge of #74527 - calebcartwright:rustfmt-toolstate-maintainers, r=Mark-Simulacrum

Add myself to toolstate change notifications for rustfmt

I'd like to get the toolstate change notifications for rustfmt as well so that I'll know when things break.

Have spoken with @topecongiro about this offline already.

Author: Manishearth

src/tools/publish_toolstate.py

@@ -26,7 +26,7 @@
 MAINTAINERS = {
     'miri': {'oli-obk', 'RalfJung', 'eddyb'},
     'rls': {'Xanewok'},
-    'rustfmt': {'topecongiro'},
+    'rustfmt': {'topecongiro', 'calebcartwright'},
     'book': {'carols10cents', 'steveklabnik'},
     'nomicon': {'frewsxcv', 'Gankra'},
     'reference': {'steveklabnik', 'Havvy', 'matthewjasper', 'ehuss'},