Ignore `#pragma once` commit

.git-blame-ignore-revs

@@ -69,3 +69,6 @@ e06d83860d798b6766b23d6eae48557387a7db85
 
 # Style: Enforce trailing newlines on svgs
 7e5baa042639ffa835271703c720e2595e90afb8
+
+# Style: Replace header guards with `#pragma once`
+324512e11c1b7663c3cf47bec6ddbe65c6b8db2b