Migrate from fix-encoding-pragma to pyupgrade as advised

Author: Pierre-Sassoulas

.pre-commit-config.yaml

@@ -10,8 +10,6 @@ repos:
     hooks:
     -   id: trailing-whitespace
     -   id: end-of-file-fixer
-    -   id: fix-encoding-pragma
-        args: [--remove]
     -   id: check-yaml
         language_version: python3
 
@@ -42,6 +40,11 @@ repos:
     -   id: pyupgrade
         args: [--py37-plus]
 
+-   repo: https://github.com/asottile/pyupgrade
+    rev: v3.20.0
+    hooks:
+    -   id: pyupgrade
+
 -   repo: https://github.com/rhysd/actionlint
     rev: v1.7.7
     hooks: