Convert format strings strings to f-strings (#23241)

* Convert all text strings to f-strings

Reformats all the text from the old "%-formatted" and .format(...) format to the newer f-string format, as defined in PEP 498. This requires Python 3.6+.

Flynt 0.69 was used to reformat the strings. 120 f-strings were created in 51 files.

F-strings are in general more readable, concise and performant. See also: https://www.python.org/dev/peps/pep-0498/#rationale

* revert pyextra changes

* revert ublox.py

Co-authored-by: Willem Melching <willem.melching@gmail.com>
old-commit-hash: 55390d273f36f49da3896e687ac5530f40c1d150

tools/scripts/setup_ssh_keys.py

@@ -7,7 +7,7 @@ import sys
 
 if __name__ == "__main__":
   if len(sys.argv) < 2:
-    print("%s <github username>" % sys.argv[0])
+    print(f"{sys.argv[0]} <github username>")
     exit(1)
 
   username = sys.argv[1]