Disable false-positive malware block during signing (symless#204)

Use newer ARM runners for ARM builds (symless#199)

* Fix Ubuntu and Fedora runner configurations in matrix.yml

* Update Ubuntu 24.04 ARM64 configuration to Ubuntu 26.04

* Remove deprecated Fedora 40 and 41 configurations from matrix.yml

* Add concurrency settings to CI workflow for managing PR builds

fix: update VERSION file to 1.20.2 (symless#179)

Signed-off-by: Rui Chen <rui@chenrui.dev>

Prevent TLS DoS by removing blocking sleep (symless#177)

fix(security): prevent potential DoS by removing blocking sleep in secureAccept

Correct format specifier in debug log for desk switch (symless#143)

fix: correct format specifier in debug log for desk switch

Update default Qt version to 6.9.3 (symless#127)

Change to release trigger and fix upload condition (symless#96)

Bump version from 1.18.0-beta to 1.18.0 (symless#82)