turn warning into f-string

src/runner.py

@@ -37,7 +37,7 @@ class Runner:
     def run_tests(self):
         # check if required dependencies have passed
         if not self._dependencies_passed():
-            logger.warning("skipping run_tests() of {self.name}, because some dependencies have not passed")
+            logger.warning(f"skipping run_tests() of {self.name}, because some dependencies have not passed")
             return
 
         # run main setup if available