ci: fix arch build

Dockerfile.arch

@@ -3,13 +3,12 @@ FROM archlinux:latest
 ENV TERM=xterm
 ENV CC="ccache gcc"
 
-RUN pacman -Syyu --noconfirm || true
+RUN pacman-key --refresh-keys
 RUN pacman -Syyu --noconfirm
 
 # reflector is optional - if it fails due to network issues, continue with default mirrorlist
 RUN pacman -S --needed --noconfirm reflector && \
-    (reflector --latest 20 --protocol https --save --sort rate /etc/pacman.d/mirrorlist || true)
-RUN export DEBUGINFOD_URLS="https://debuginfod.archlinux.org"
+    (reflector --latest 20 --protocol https --sort rate --save /etc/pacman.d/mirrorlist || true)
 RUN pacman-key --init
 RUN pacman -S --needed --noconfirm \
   autoconf \