ci: add E722 to flake8 ignore list

This change adds E722 to the flake8 ignore list. This is done to avoid
flake8 from complaining about the use of bare except statements:
```console
$ flake8 --ignore E203,E211,E221,E225,E231,E241,E251,E261,E266,E501,E701,E704,W503 convert-hf-to-gguf.py
convert-hf-to-gguf.py:516:9: E722 do not use bare 'except'
```

Refs: https://www.flake8rules.com/rules/E722.html

Signed-off-by: Daniel Bevenius <[email protected]>

Author: danbev

.github/workflows/python-lint.yml

@@ -20,5 +20,5 @@ jobs:
       - name: flake8 Lint
         uses: py-actions/flake8@v2
         with:
-            ignore: "E203,E211,E221,E225,E231,E241,E251,E261,E266,E501,E701,E704,W503"
+            ignore: "E203,E211,E221,E225,E231,E241,E251,E261,E266,E501,E701,E704,E722,W503"
             exclude: "examples/*,examples/*/**,*/**/__init__.py"