fix cmake instructions

.github/workflows/build-wheels.yaml

@@ -42,7 +42,7 @@ jobs:
       run: |
         git clone https://github.com/libarchive/libarchive.git libarchive-src    
         cd libarchive-src; git checkout 3.5
-        mkdir build; cd build
+        mkdir build-libarchive; cd build-libarchive
         cmake ../
         make -j$(nproc);  make install
         cd ../..