Zeek-client

* Address a few pylint categories (Benjamin Bannier, Corelight)

* Make new dependency available to pylint pre-commit hook (Benjamin Bannier, Corelight)

* Add basic generic linters (Benjamin Bannier, Corelight)

* Use allow list for suppressed pylint warnings instead of ignoring them (Benjamin Bannier, Corelight)

* Run pylint via pre-commit hook (Benjamin Bannier, Corelight)

* Add `.git-blame-ignore-revs` file (Benjamin Bannier, Corelight)

* Format sources with black (Benjamin Bannier, Corelight)

* Remove manually implemented testing framework (Benjamin Bannier, Corelight)

* For Zeek-bundled installs, add Zeek's package tree to the search path (Christian Kreibich, Corelight)

* Add test to verify Zeek-bundled install's Python package locator. (Christian Kreibich, Corelight)

* Add a current working directory context guard to CLI tests (Christian Kreibich, Corelight)

* CI: Remove Python 3.7 from workflow (EOL); don't fail matrix quickly. (Christian Kreibich, Corelight)

* CI: Install websocket-client in Github test workflow (Christian Kreibich, Corelight)

* Test fixes: correct outdated comment and redundant environment tweak (Christian Kreibich, Corelight)

* Release 1.3.1.

* Release 1.3.0.

* Relax Event validation (Arne Welzel, Corelight)