fix: snapcraft update [INS-3645]

[filfreire]

WIP,

Closes INS-3645

Trying to close #7106, #7138

Related PR electron-userland/electron-builder#8549

Experiments

test1:

• Ubuntu 16, core22 snap baked on 22.04 🔴 - FAIL: sending requests doesn't work
• Ubuntu 18, core22 snap baked on 22.04 ✅
• Ubuntu 20, core22 snap baked on 22.04 ✅
• Ubuntu 22, core22 snap baked on 22.04 ✅
• Ubuntu 24, core22 snap baked on 22.04 ✅

test2:

• Ubuntu 22, core22 snap baked on 24.04 ✅
• Ubuntu 24, core22 snap baked on 24.04 ✅

test3:

• Ubuntu 16, core22 with gnome-42-2204 plug baked on 24.04 🔴 - FAIL - segmentation fault
• Ubuntu 18, core22 with gnome-42-2204 plug baked on 24.04 🔴 - FAIL - segmentation fault

test4:

• Ubuntu 22, core24 snap baked on 24.04 🔴 - FAIL - needs fix: snapcraft core22 and core24 support [#8548] electron-userland/electron-builder#8549 to be fixed
• Ubuntu 24, core24 snap baked on 24.04 🔴 - FAIL - needs fix: snapcraft core22 and core24 support [#8548] electron-userland/electron-builder#8549 to be fixed

current blocker

using core24 we get:

error while loading shared libraries: libX11.so.6: cannot open shared object file: No such file or directory

Notes

• Might need further changes on electron-builder side first. Initial attempt made is just trying to use only changes on the config on our side.

• Not looked at yet - when running electron-builder to produce the linux-unpacked bits that go into different packaged versions of Insomnia (.deb, .snap, ...) on ubuntu-latest or on ubuntu-22.04 or ubuntu-20.04 - that could cause different issues with different versions - we need to figure out which one causes lowest amount of trouble. Example - pin ubuntu version #7868

• Downgrading is a trap Fix #5531 bump snapcraft base to core22 #5555