chore: adhere to ruff's "N" rules (#2377)

* chore: adhere to ruff's "N" rules

WARN: reinstall failing extensions!

bunch of more consistent variable naming. inspired by this issue.
https://github.com/lnbits/lnbits/issues/2308

* fixup! chore: adhere to ruff's "N" rules
* rename to funding_source
* skip jmeter

---------

Co-authored-by: Pavol Rusnak <pavol@rusnak.io>

lnbits/wallets/opennode.py

@@ -12,7 +12,7 @@ from .base import (
     PaymentResponse,
     PaymentStatus,
     StatusResponse,
-    Unsupported,
+    UnsupportedError,
     Wallet,
 )
 
@@ -74,7 +74,7 @@ class OpenNodeWallet(Wallet):
         **kwargs,
     ) -> InvoiceResponse:
         if description_hash or unhashed_description:
-            raise Unsupported("description_hash")
+            raise UnsupportedError("description_hash")
 
         r = await self.client.post(
             "/v1/charges",