chore: update .gitignore to fix .coi and add .local (#625)

Adds `.local` to `.gitignore` and removes the trailing slash from the `.coi` entry.

Author: jumski

.gitignore

@@ -84,4 +84,5 @@ pkgs/edge-worker/AGENTS.md
 pkgs/website/AGENTS.md
 
 
-.coi/
+.coi
+.local