Revert "chore(ci): remove remove-unwanted-software-action (ublue-os#209)"

This reverts commit 7c66590.

This only got rarer but this is still needed sometimes :(

Author: renner0e

.github/workflows/build.yml

@@ -46,6 +46,10 @@ jobs:
       - name: Checkout
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
+      # This is optional, but if you see that your builds are way too big for the runners, you can enable this by uncommenting the following lines:
+      - name: Maximize build space
+        uses: ublue-os/remove-unwanted-software@695eb75bc387dbcd9685a8e72d23439d8686cba6
+
       - name: Get current date
         id: date
         run: |