Correct the regex calls

Signed-off-by: Emmanuel Ferdman <emmanuelferdman@gmail.com>

Author: emmanuel-ferdman

scripts/wasm-rebuild/docker-scripts/isolate_tests.py

@@ -46,7 +46,7 @@ def extract_and_write(f, path):
 def write_cases(f, tests):
     cleaned_filename = f.replace(".","_").replace("-","_").replace(" ","_").lower()
     for test in tests:
-        remainder = re.sub(r'^ {4}', '', test, 0, re.MULTILINE)
+        remainder = re.sub(r'^ {4}', '', test, count=0, flags=re.MULTILINE)
         source_code_hash = hashlib.sha256(test).hexdigest()
         with open(f'test_{source_code_hash}_{cleaned_filename}.sol', 'w', encoding='utf8') as _f:
             _f.write(remainder)