fix: Add tests for file:///path/with/may/sub/dir/s

tests/files/basic.plan

@@ -1,2 +1,2 @@
 sources=('file:/home/user')
-targets=('file:/var/backup')
+targets=('file:/etc/lvm/backup')

tests/files/multiple_file_targets.plan

@@ -1,6 +1,6 @@
 sources=('file:/home/user')
 targets=(
-    'file:///home/backups'
+    'file:///etc/lvm/backup'
     'file:/var/backup'
     'file:/backups'
     's3://bucket'