fix: update v1 flag for deprecations (#1797)

Author: lkstrp

scripts/_helpers.py

@@ -29,7 +29,7 @@
 
 REGION_COLS = ["geometry", "name", "x", "y", "country"]
 
-PYPSA_V1 = bool(re.match(r"^0\.35\.\d\.post1\.dev\d{3}", pypsa.__version__))
+PYPSA_V1 = bool(re.match(r"^0\.35\.[1-9]\.post1", pypsa.__version__))
 
 
 def get_scenarios(run):