ci: ignore body-max-line-length

We don't care the line length of commit message.

ref.
https://github.com/rook/rook/pull/10445

Signed-off-by: Satoru Takeuchi <satoru.takeuchi@gmail.com>

.commitlintrc.json

@@ -44,6 +44,10 @@
     "footer-leading-blank": [
       2,
       "always"
+    ],
+    "body-max-line-length": [
+      0,
+      "always"
     ]
   }
 }