fixup! Add signing keychain to workflow

Author: rgaudin

.github/workflows/wheels.yml

@@ -55,7 +55,7 @@ jobs:
           echo "unlocked"
 
           # import certificate into keychain then remove from filesystem
-          security import $CERTIFICATE -k ${APPLE_SIGNING_KEYCHAIN_PATH} -P "${{ secrets.APPLE_SIGNING_P12_PASSWORD }}" -A
+          security import ${CERTIFICATE} -k ${APPLE_SIGNING_KEYCHAIN_PATH} -P "${{ secrets.APPLE_SIGNING_P12_PASSWORD }}" -A
           echo "imported"
           rm $CERTIFICATE