Update pre-commit config and add PyUpgrade hook

Author: homebysix

.pre-commit-config.yaml

@@ -10,12 +10,16 @@ repos:
       - id: check-merge-conflict
       - id: check-yaml
       - id: end-of-file-fixer
-      - id: fix-encoding-pragma
       - id: mixed-line-ending
       - id: no-commit-to-branch
         args: [--branch, main]
       - id: trailing-whitespace
         args: [--markdown-linebreak-ext=md]
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v3.16.0
+    hooks:
+      - id: pyupgrade
+        args: ['--py36-plus']
   - repo: https://github.com/python/black
     rev: 24.4.2
     hooks: