debian packaging: include python3-sip-dev in build dependencies (fixes #15609)

Author: jef-n

debian/control.in

@@ -29,6 +29,7 @@ Build-Depends:
  python3-dev,
  python3-all-dev,
  python3-sip,
+ python3-sip-dev,
  python3-pyqt5,
  libosgearth-dev,
  git,