Use apt-spy2 to sanitize list of apt mirrors.

scripts/build/install_depends.sh

@@ -5,7 +5,7 @@ set -e
 PKGS=""
 for pkg in `grep -A 35 packages: .travis.yml  | grep -e '^ *[-]' | awk '{print $2}'`
 do
-  if [ "${BUILD_OS}" = ubuntu-22.04 -a "${pkg}" = python-dev ]
+  if [ "${BUILD_OS}" = "ubuntu-22.04" -a "${pkg}" = "python-dev" ]
   then
     pkg="python-dev-is-python3"
   fi
@@ -19,6 +19,13 @@ then
 	${PRE_INSTALL_CMD}
 fi
 
+if [ "${BUILD_OS}" != "ubuntu-18.04" ]
+then
+  sudo gem install apt-spy2
+  sudo apt-spy2 check --strict
+  sudo apt-spy2 fix --commit --strict
+fi
+
 sudo apt-get update -y
 sudo apt-get -y install ${PKGS}