ci: Attempt to increase disk space

Might fix the ci running out of space.

.github/workflows/ci.yml

@@ -11,6 +11,15 @@ jobs:
     name: nix flake check
     runs-on: ubuntu-latest
     steps:
+    - uses: easimon/maximize-build-space@v10
+      with:
+        root-reserve-mb: 512
+        swap-size-mb: 1024
+        remove-dotnet: 'true'
+        remove-android: 'true'
+        remove-haskell: 'true'
+        remove-codeql: 'true'
+        remove-docker-images: 'true'
     - uses: actions/checkout@v4
     - uses: cachix/install-nix-action@v26
     - run: nix flake check