re-add symlink for disk maintenance

modify system-updates script

install/etc/cron.weekly/disk-maintenance

@@ -0,0 +1 @@
+/usr/local/bin/disk-maintenance

install/usr/local/bin/system-updates

@@ -1,6 +1,7 @@
 #!/bin/bash
 
-pacman -Syu --noconfirm --ignore=linux
-
-python3 -m pip install --upgrade protontricks
+# @note: could cause instability, require applications to be reloaded, or require a reboot
+pacman -Syu --noconfirm
 
+# @note: this alternative skips linux kernel upgrades, but the user will have to do so eventually themselves
+# pacman -Syu --noconfirm --ignore=linux