fix flake8 bugbear errors

.flake8

@@ -1,12 +1,12 @@
 [flake8]
-# B = bugbear
-# E = pycodestyle errors
-# F = flake8 pyflakes
-# W = pycodestyle warnings
-# B9 = bugbear opinions
-# ISC = implicit str concat
-select = B, E, F, W, B9, ISC
-ignore =
+extend-select =
+    # bugbear
+    B
+    # bugbear opinions
+    B9
+    # implicit str concat
+    ISC
+extend-ignore =
     # slice notation whitespace, invalid
     E203
     # import at top, too many circular import fixes
@@ -15,10 +15,11 @@ ignore =
     E501
     # bare except, handled by bugbear B001
     E722
-    # bin op line break, invalid
-    W503
-    # requires Python 3.10
+    # zip with strict=, requires python >= 3.10
     B905
+    # string formatting opinion, B028 renamed to B907
+    B028
+    B907
 # up to 88 allowed by bugbear B950
 max-line-length = 80
 per-file-ignores =