error when creating avb key on Lineage 18.1

[steadfasterX]

>> [Sat Mar  2 15:50:19 CET 2024] Generating AVB (pk8 | 4096/sha256)...
setting rsa-4096
setting sha256
creating android/signing-keys/avb.pk8 with no password

... android/signing-keys/avb.x509.der created
... android/signing-keys/avb.pem created
  File "android/lineage-18.1/external/avb/avbtool", line 416
    b = 2L**32  # pylint: disable=long-suffix
        ^
SyntaxError: invalid decimal literal

reason: the script avbtool was made at a time where python2 was still active and so there are 2 possible workarounds:

1. switch to python2 (virtualenv)
2. get external/avb from LOS 19.1

both would fix that issue but are not ideal..