upgrade arduino in CI (#7716)

Thanks to @matthijskooijman, @per1234 and @earlephilhower

Author: d-a-v

tests/common.sh

@@ -82,7 +82,8 @@ function build_sketches()
  if [ -e $cache_dir/core/*.a ]; then
  # We need to preserve the build.options.json file and replace the last .ino
  # with this sketch's ino file, or builder will throw everything away.
- sed -i "s,^.*sketchLocation.*$, \"sketchLocation\": \"$sketch\"\,,g" $build_dir/build.options.json
+ jq '."sketchLocation" = "'$sketch'"' $build_dir/build.options.json > $build_dir/build.options.json.tmp
+ mv $build_dir/build.options.json.tmp $build_dir/build.options.json
  # Set the time of the cached core.a file to the future so the GIT header
  # we regen won't cause the builder to throw it out and rebuild from scratch.
  touch -d 'now + 1 day' $cache_dir/core/*.a
@@ -153,11 +154,11 @@ function install_libraries()
 
 function install_ide()
 {
- #local idever='nightly'
- #local ideurl='https://www.arduino.cc/download.php?f=/arduino-nightly'
+ local idever='nightly'
+ local ideurl='https://www.arduino.cc/download.php?f=/arduino-nightly'
 
- local idever='1.8.10'
- local ideurl="https://downloads.arduino.cc/arduino-$idever"
+ #local idever='1.8.10'
+ #local ideurl="https://downloads.arduino.cc/arduino-$idever"
 
  echo "using Arduino IDE distribution ${idever}"