Update to OpenWrt 23.05.5

[gsanchietti]

Bump OpenWrt to 23.05.5.

Official releases notes: https://openwrt.org/releases/23.05/notes-23.05.5

A complete changelog has been generated using openwrt-changes tool that can be found inside the tools directory of this repository:

cd tools && ./openwrt-changes 23.05.4 23.05.5

See attached files:

• core-changes.md
• packages-changes.md

Relevant changes among packages that require extra testing:

• banip
• adblock

Relevant changes at the core level that require extra testing:

• kernel
• openssl

[gsanchietti]

Testing image: any 8-23.05.5 image from the download page

Test case 1

• Install a new machine
• Verify the system starts and main functions are working: UI, firewall rules, DHCP and DNS

Test case 2

• Update an existing machine
• Verify the global behavior is unchanged
• Verify all previously recognized hardware is still available

Test case 3: banip

• Configure banip from the UI
• Verify that all features are still working

Test case 4: adblock

• Configure adblock following the doc
• Verify that all features are still working

[gsanchietti]

All test cases verified. Test case 3 verified using UI from #795