fix: moongreet cache dir permissions 700 instead of 755

Prevents local username enumeration via world-readable cache directory.

moongreet-git/PKGBUILD

@@ -43,6 +43,6 @@ package() {
     install -Dm644 config/moongreet.toml "$pkgdir/etc/moongreet/moongreet.toml"
 
     # Cache directories
-    install -dm755 "$pkgdir/var/cache/moongreet"
-    install -dm755 "$pkgdir/var/cache/moongreet/last-session"
+    install -dm700 "$pkgdir/var/cache/moongreet"
+    install -dm700 "$pkgdir/var/cache/moongreet/last-session"
 }