ci: maximize build space

.github/workflows/ubuntu.yml

@@ -132,6 +132,16 @@ jobs:
           ]
 
     steps:
+    - name: Maximize build space
+      uses: easimon/maximize-build-space@master
+      with:
+        remove-dotnet: 'true'
+        remove-android: 'true'
+        remove-haskell: 'true'
+        remove-codeql: 'true'
+        remove-docker-images: 'true'
+
+    - name: Checkout
     - uses: actions/checkout@v1
 
     - name: Setup