Exclude formatting commit from blame

RReverser · web-flow · commit 5b51a8ef4f0f · 2023-01-12T17:40:48.000Z
Excludes c34fbfa to make Git blame a bit more useful.
diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
@@ -6,3 +6,5 @@ a06baa56b95674fc626b3c3fd680d6a65357fe60
 971c549ca334b7b7406e61e958efcca9c4152822
 # refactor infcx building
 283abbf0e7d20176f76006825b5c52e9a4234e4c
+# format libstd/sys
+c34fbfaad38cf5829ef5cfe780dc9d58480adeaa
