Update truffleruby+graalvm-dev builds to use the latest Java LTS build as a base.

truffleruby+graalvm-dev currently delivers builds using both the latest Java and the latest Java LTS release as a base. Since the latest Java changes more frequently than the LTS release, using the LTS as a base helps prevent the URLs from growing stale.

share/ruby-build/truffleruby+graalvm-dev

 platform="$(uname -s)-$(uname -m)"
 case $platform in
 Linux-x86_64)
-  install_package "truffleruby+graalvm-dev" "https://github.com/graalvm/graalvm-ce-dev-builds/releases/latest/download/graalvm-ce-java19-linux-amd64-dev.tar.gz" truffleruby_graalvm
+  install_package "truffleruby+graalvm-dev" "https://github.com/graalvm/graalvm-ce-dev-builds/releases/latest/download/graalvm-ce-java17-linux-amd64-dev.tar.gz" truffleruby_graalvm
   ;;
 Linux-aarch64)
-  install_package "truffleruby+graalvm-dev" "https://github.com/graalvm/graalvm-ce-dev-builds/releases/latest/download/graalvm-ce-java19-linux-aarch64-dev.tar.gz" truffleruby_graalvm
+  install_package "truffleruby+graalvm-dev" "https://github.com/graalvm/graalvm-ce-dev-builds/releases/latest/download/graalvm-ce-java17-linux-aarch64-dev.tar.gz" truffleruby_graalvm
   ;;
 Darwin-x86_64)
   use_homebrew_openssl
-  install_package "truffleruby+graalvm-dev" "https://github.com/graalvm/graalvm-ce-dev-builds/releases/latest/download/graalvm-ce-java19-darwin-amd64-dev.tar.gz" truffleruby_graalvm
+  install_package "truffleruby+graalvm-dev" "https://github.com/graalvm/graalvm-ce-dev-builds/releases/latest/download/graalvm-ce-java17-darwin-amd64-dev.tar.gz" truffleruby_graalvm
   ;;
 Darwin-arm64)
   use_homebrew_openssl
-  install_package "truffleruby+graalvm-dev" "https://github.com/graalvm/graalvm-ce-dev-builds/releases/latest/download/graalvm-ce-java19-darwin-aarch64-dev.tar.gz" truffleruby_graalvm
+  install_package "truffleruby+graalvm-dev" "https://github.com/graalvm/graalvm-ce-dev-builds/releases/latest/download/graalvm-ce-java17-darwin-aarch64-dev.tar.gz" truffleruby_graalvm
   ;;
 *)
   colorize 1 "Unsupported platform: $platform"