Use golang 1.21 for forgejo-test-deps

.ci-make.sh

@@ -149,8 +149,8 @@ case "$1" in
 		export DEBIAN_FRONTEND=noninteractive
 		apt update -qq
 		apt install -qq --no-install-recommends -y git-lfs
-		apt install -qq -y -t bookworm-backports golang-1.20
-		ln -sf /usr/lib/go-1.20/bin/go /usr/local/bin/go
+		apt install -qq -y -t bookworm-backports golang-$DEP_GOLANG_VER
+		ln -sf /usr/lib/go-$DEP_GOLANG_VER/bin/go /usr/local/bin/go
 		adduser --quiet --comment forgejo --disabled-password forgejo
 		chown -R forgejo:forgejo .
 		;;

.crystalintegration.yml

@@ -18,6 +18,7 @@ variables:
   - &deb_test_image_focal 'sc.cryxtal.org/ci-img/deb-test-ubuntu:focal'
   - &deb_test_image_kinetic 'sc.cryxtal.org/ci-img/deb-test-ubuntu:kinetic'
   - &deb_test_image_lunar 'sc.cryxtal.org/ci-img/deb-test-ubuntu:lunar'
+  - &forgejo_test_golang_ver '1.21'
   - &build_submodule 'forgejo'
   - &goproxy_override ''
   - &goproxy_setup |-
@@ -104,6 +105,7 @@ steps:
     group: checks
     environment:
       GOPROXY_OVERRIDE: *goproxy_override
+      DEP_GOLANG_VER: *forgejo_test_golang_ver
     secrets:
       - goproxy_default
     commands: