refactor: Remove nanoid dependency from native Python task runner (#19025)

packages/@n8n/task-runner-python/src/nanoid.py

@@ -0,0 +1,21 @@
+import secrets
+import string
+
+
+NANOID_CHARSET = string.ascii_uppercase + string.ascii_lowercase + string.digits
+TARGET_NANOID_LEN = 22
+CHARSET_LEN = len(NANOID_CHARSET)
+
+# Collision probability is roughly k^2/(2n) where k=IDs generated, n=possibilities
+# At 10^12 IDs generated with 62^22 possibilities -> ~1.8e-16 chance of collision
+
+
+def nanoid() -> str:
+    nanoid = ""
+
+    while len(nanoid) < TARGET_NANOID_LEN:
+        index = secrets.randbits(6)
+        if index < CHARSET_LEN:
+            nanoid += NANOID_CHARSET[index]
+
+    return nanoid

packages/@n8n/task-runner-python/src/nanoid_utils.py

@@ -1,9 +0,0 @@
-from nanoid.generate import generate
-import string
-
-NANOID_CHARSET = string.ascii_uppercase + string.ascii_lowercase + string.digits
-NANOID_LENGTH = 21
-
-
-def nanoid() -> str:
-    return generate(NANOID_CHARSET, NANOID_LENGTH)

packages/@n8n/task-runner-python/src/task_runner.py

@@ -13,7 +13,7 @@ from src.errors import (
     TaskMissingError,
 )
 from src.message_types.broker import TaskSettings
-from src.nanoid_utils import nanoid
+from src.nanoid import nanoid
 
 from src.constants import (
     RUNNER_NAME,