Disable pylint check for too-few-public-methods

This check is overly aggressive and not really useful, especially for
non-Python codebase, where the primary use of Python is for testing.

(cherry picked from commit 6f134283eb)

.pylintrc

@@ -7,3 +7,4 @@ disable=
     C0209, # consider-using-f-string
     C0415, # import-outside-toplevel
     R0801, # duplicate-code
+    R0903, # too-few-public-methods