Update flags (#1889)

Author: rchiodo

src/debugpy/_vendored/pydevd/pydevd_attach_to_process/linux_and_mac/compile_linux.sh

@@ -8,4 +8,4 @@ case $ARCH in
 esac
 
 SRC="$(dirname "$0")/.."
-g++ -std=c++11 -shared -fPIC -D_FORTIFY_SOURCE=2 -nostartfiles $SRC/linux_and_mac/attach.cpp -o $SRC/attach_linux_$SUFFIX.so
+g++ -std=c++11 -shared -fPIC -O2 -D_FORTIFY_SOURCE=2 -nostartfiles --stack-protector-strong $SRC/linux_and_mac/attach.cpp -o $SRC/attach_linux_$SUFFIX.so