CI: Run maximize-build-space action before building

.github/workflows/CI.yml

@@ -13,6 +13,15 @@ jobs:
     concurrency:
       group: CI
     steps:
+    - name: Maximize build space
+      uses: easimon/maximize-build-space@master
+      with:
+        overprovision-lvm: 'true'
+        remove-dotnet: 'true'
+        remove-android: 'true'
+        remove-haskell: 'true'
+        remove-codeql: 'true'
+        remove-docker-images: 'true'
     - name: Checkout
       uses: actions/checkout@v3
     - name: "Install Nix"
@@ -30,8 +39,6 @@ jobs:
       env:
         GC_DONT_GC: 1
       run: |
-        sudo mount -o remount,size=30G /run/user/1001
-
         for iso in $(nix flake show --json | nix run nixpkgs#jq -- -r keys[]); do
           nix build .#$iso
           split -d result/iso/*.iso -b 1G $iso.iso-part-