CI (OpenBSD): updates CI workflow to upgrade packages before install

Author: CarterLi

.github/workflows/ci.yml

@@ -455,7 +455,8 @@ jobs:
           version: '7.7'
           run: |
             uname -a
-            sudo pkg_add -r cmake git pkgconf wayland vulkan-headers vulkan-loader glib2 dconf dbus sqlite3 imagemagick chafa
+            sudo pkg_add -u
+            sudo pkg_add -r llvm cmake git pkgconf wayland vulkan-headers vulkan-loader glib2 dconf dbus sqlite3 imagemagick chafa
             cmake -DSET_TWEAK=Off -DBUILD_TESTS=On -DENABLE_EMBEDDED_PCIIDS=On -DENABLE_EMBEDDED_AMDGPUIDS=On .
             cmake --build . --target package --verbose -j4
             ./fastfetch --list-features