update v4l2 (fix compile issue)

[sigmaSd]

Hello @lemunozm ! I hope you're doing well

I tried to compile the project with all features but it fails with

error: failed to run custom build command for `v4l2-sys-mit v0.2.0`

Caused by:
  process didn't exit successfully: `/home/mrcool/dev/rust/cargo_target_dir/debug/build/v4l2-sys-mit-96a866da0c5ee927/build-script-build` (exit status: 101)
  --- stderr
  thread 'main' panicked at /home/mrcool/.cargo/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.39/src/fallback.rs:700:9:
  "v4l2_pix_format_union_(anonymous_at_/usr/include/linux/videodev2_h_500_2)" is not a valid Ident
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
⏎                

Updating v4l2 seems to fix the issue for me

[lemunozm]

Hi @sigmaSd!

Thanks a lot for your contribution, as always! 🚀