Ignore the Black commit in git blame output

ogrisel · ogrisel · commit 227f24668b97 · 2023-10-13T14:58:24.000+02:00
diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
@@ -0,0 +1 @@
+90d66589f643f5d291e67ddd94e31c0ec1f2d92d

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+90d66589f643f5d291e67ddd94e31c0ec1f2d92d`