19321: examples/gnrc_border_router: add BLE as downlink option r=benpicco a=benpicco
19325: esptools/install.sh: Fix shellcheck issues r=benpicco a=bergzand
### Contribution description
Quote all the things!
### Testing procedure
The script should still work as before
### Issues/PRs references
None
19327: shell/cmds: GNRC: replace puts() with printf() r=benpicco a=benpicco
19328: pkg/u8g2: bump version r=benpicco a=benpicco
Co-authored-by: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Co-authored-by: Koen Zandberg <koen@bergzand.net>
Co-authored-by: Benjamin Valentin <benpicco@beuth-hochschule.de>
6b501f74c6