fix(auto): keep line feed and trailing blank lines

Refs: https://blog.jarrousse.org/2022/07/31/yaml-files-linting-and-formatting/
Refs: https://yaml.org/spec/1.2-old/spec.html#style/block/literal

Signed-off-by: Derek Lewis <DerekNonGeneric@inf.is>

Author: DerekNonGeneric

.restyled.yaml

@@ -1,8 +1,8 @@
 auto: true
 
-commit_template: |
+commit_template: |+
   style: apply changes from ${restyler.name} restyler
-
+  
   Signed-off-by: Restyled Commits <commits@restyled.io>
 pull_requests: false
 restylers_version: dev