refactor: change DRY_RUN to 1

Co-authored-by: Asher <ash@coder.com>

Author: jsjoeio

ci/build/release-prep.sh

@@ -10,7 +10,7 @@
 set -euo pipefail
 
 main() {
-  if [ "${DRY_RUN-1}" -eq 0 ]; then
+  if [ "${DRY_RUN-}" = 1 ]; then
     echo "Performing a dry run..."
     # Disabled because shellcheck wants me to do this
     # SC2209: Use var=$(command) to assign output (or quote to assign string).