bump version number to 7

Author: arelange

metadata.json

@@ -3,7 +3,7 @@
  "name": "Hibernate Status Button",
  "url": "https://github.com/arelange/gnome-shell-extension-hibernate-status",
  "description": "Adds a Hibernate button in Status menu. Using Alt modifier, you can also select Hybrid Sleep instead.",
- "version": 6,
+ "version": 7,
  "shell-version": ["3.14",
                    "3.16",
                    "3.18"]