cc tests: disable clang-tidy misc-override-with-different-visibility

This check appeared in newer clang-tidy versions, and userver seems not to follow this rule.
commit_hash:0aebfdd7c80d6019db7e62356353a35ea9a17452

Author: Anton3

.clang-tidy

@@ -77,6 +77,7 @@ Checks:
   ,-misc-no-recursion\
   ,-misc-unconventional-assign-operator\
   ,-misc-use-anonymous-namespace\
+  ,-misc-override-with-different-visibility\
   ,-modernize-avoid-c-arrays\
   ,-modernize-pass-by-value\
   ,-modernize-return-braced-init-list\