add Python 3.12 to GitHub actions

removed accidentally added file from a few commits ago (no need to rewrite history as it's just a random text file with links to resources)

Author: sylikc

.github/workflows/lint-and-test.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, '3.10', 3.11]
+        python-version: [3.6, 3.7, 3.8, 3.9, '3.10', 3.11, 3.12]
 
     env:
       exiftool_version: 12.15