docs: cut v1.0.0 for production contract

Serialize CI ctest to avoid the known parallel test_server flake.

Author: blburns

.github/workflows/ci.yml

@@ -22,4 +22,4 @@ jobs:
         run: cmake --build build -j$(sysctl -n hw.ncpu)
 
       - name: Test
-        run: ctest --test-dir build --output-on-failure
+        run: ctest --test-dir build --output-on-failure -j1