CI: increase timeout to accommodate newly-supported tests

Author: jeffbolznv

.github/workflows/build.yml

@@ -407,7 +407,7 @@ jobs:
         run: |
           cd build
           # This is using llvmpipe and runs slower than other backends
-          ctest -L main --verbose --timeout 2700
+          ctest -L main --verbose --timeout 3600
 
       - name: Determine tag name
         id: tag