chore: skip style checks in sider

[skip ci]

.flake8

@@ -31,6 +31,7 @@ ignore =
     E124, # closing bracket, irritating while writing QB code
     E131, # continuation line unaligned for hanging indent
     E123, # closing bracket does not match indentation of opening bracket's line
+    E101, # ensured by use of black
 
 max-line-length = 200
 exclude=.github/helper/semgrep_rules