Modernize print calls to use f-strings (#3011)

Convert .format() style to f-strings in log output.

Closes #2554

Author: chelslava

src/robotide/log/log.py

@@ -90,7 +90,7 @@ def _log_message(self, message):
         if self._panel:
             self._panel.update_log()
         if self.log_to_console:
-            print('{}'.format(message_to_string(message)))
+            print(f'{message_to_string(message)}')
         if self.log_to_file:
             self._logfile.write(message_to_string(message))
             self._outfile.flush()

src/robotide/parserlog/parserlog.py

@@ -89,7 +89,7 @@ def _log_message(self, message):
         if self._panel:
             self._panel.update_log()
         if self.log_to_console:
-            print("{}".format(message_to_string(message, True)))  # >> sys.stdout, _message_to_string(message)
+            print(f"{message_to_string(message, True)}")
         if self.log_to_file:
             self._logfile.write(message_to_string(message, True))
             self._outfile.flush()