Merge pull request RIOT-OS#8745 from aabadie/pr/tools/print_doxygen_v…

…ersion

dist/tools/ci: also print doxygen and flake8 versions

dist/tools/ci/print_toolchain_versions.sh

@@ -68,7 +68,7 @@ printf "%21s: %s\n" "avr-libc" "$(avr_libc_version avr-gcc)"
 printf "\n"
 printf "%s\n" "Installed development tools"
 printf "%s\n" "---------------------------"
-for c in cmake cppcheck git; do
+for c in cmake cppcheck doxygen flake8 git; do
     printf "%21s: %s\n" "$c" "$(get_cmd_version $c)"
 done
 printf "%21s: %s\n" "coccinelle" "$(get_cmd_version spatch)"