ENH: Update pre-commit settings adding "end-of-file-fixer"

See https://github.com/pre-commit/pre-commit-hooks#end-of-file-fixer

.pre-commit-config.yaml

@@ -9,6 +9,7 @@ repos:
   - id: check-toml
   - id: check-yaml
   - id: debug-statements
+  - id: end-of-file-fixer
   - id: mixed-line-ending
   - id: trailing-whitespace