fix: dictionary test issue found by ruff

Also update the ruff config to avoid deprecated usage.

caput/scripts/runner.py

@@ -484,7 +484,7 @@ def queue(
     if sfile != dfile:
         shutil.copyfile(sfile, dfile)
 
-    if "modules" in rconf and rconf["modules"]:
+    if rconf.get("modules"):
         modules = rconf["modules"]
         modules = (modules,) if isinstance(modules, str) else modules
         modstr = "module purge\nmodule load "

pyproject.toml

@@ -19,10 +19,10 @@ requires = [
 # flake8-blind-except ('BLE')
 # flake8-comprehensions ('C4')
 # flake8-return ('RET')
-select = ["E", "D", "F", "I", "UP", "NPY", "RUF", "BLE", "C4", "RET"]
+lint.select = ["E", "D", "F", "I", "UP", "NPY", "RUF", "BLE", "C4", "RET"]
 
 # E203, W503
-ignore = [
+lint.ignore = [
     "E501", # E501: line length violations. Enforce these with `black`
     "E741", # E741: Ambiguous variable name
     "D105", # D105: Missing docstring in magic method