Merge pull request espressif#908 from david-cermak/update/modem_v1.4.1

[modem]: Fix version v1.4.1 from `release-modem-v1.4` branch

Merge pull request espressif#905 from david-cermak/fix/eppp_netif_rx_err

[eppp]: Fix tun netif to (optionally) return errors

Merge pull request espressif#887 from david-cermak/fix/eppp_uart_deps

[eppp]: Fix uart driver deps with new IDF

Merge pull request espressif#885 from david-cermak/fix/eppp_uart_chan…

…nels

[eppp]: Fix getting context for channel API

Merge pull request espressif#875 from david-cermak/update/eppp_v1.1

[eppp]: Bump 1.0.1 -> 1.1.0

Merge pull request espressif#878 from david-cermak/bump/mosq_2.0.20.4

bump(mosq): 2.0.20~3 -> 2.0.20~4

Merge pull request espressif#865 from david-cermak/fix/eppp_ipv4_only

[eppp]: Support for IPv4-only mode

Merge pull request espressif#854 from glmfe/master

bump(websocket): 1.4.0 -> 1.5.0

Merge pull request espressif#814 from david-cermak/feat/eppp_channels

[eppp-link]: Support for channels

Merge pull request espressif#833 from david-cermak/fix/mosq_minor

[mosq]: Fix some recent bugs