[continuous-integration] use apt-get instead of apt (#5032)
This commit changes apt to apt-get for the WARNING in build logs:
WARNING: apt does not have a stable CLI interface. Use with caution in
scripts.
diff --git a/script/bootstrap b/script/bootstrap
index 5fd0123..9754dd3 100755
--- a/script/bootstrap
+++ b/script/bootstrap
@@ -35,7 +35,7 @@
install_packages_apt()
{
- # apt update and install dependencies
+ # apt-get update and install dependencies
sudo apt-get update
sudo apt-get --no-install-recommends install -y automake g++ libtool lsb-release make cmake ninja-build