Skip NumPy on PyPy3.11

Author: hugovk

.ci/install.sh

@@ -38,7 +38,10 @@ python3 -m pip install -U pytest-timeout
 python3 -m pip install pyroma
 
 if [[ $(uname) != CYGWIN* ]]; then
-    python3 -m pip install numpy
+    # NumPy doesn't support PyPy3.11
+    if [[ $GHA_PYTHON_VERSION != pypy3.11 ]]; then
+        python3 -m pip install numpy
+    fi
 
     # PyQt6 doesn't support PyPy3
     if [[ $GHA_PYTHON_VERSION == 3.* ]]; then