Update build.yml

Author: nixel2007

.github/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
     - name: Maximize build space
       uses: easimon/maximize-build-space@master
       with:
-        root-reserve-mb: 35000
+        root-reserve-mb: 25000
         swap-size-mb: 1024
         remove-dotnet: 'true'
         remove-android: 'true'