Upgrade ReleaseKit and simplify release tooling

scripts/release.sh

@@ -3,23 +3,4 @@ set -euo pipefail
 
 script_dir=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)
 cd "$script_dir/.."
-
-releasekit_module=gitea.maximumdirect.net/eric/ReleaseKit
-bootstrap_dir=$(mktemp -d "${TMPDIR:-/tmp}/releasekit-bootstrap.XXXXXX")
-trap 'rm -rf "$bootstrap_dir"' EXIT
-cp go.mod "$bootstrap_dir/go.mod"
-if [[ -f go.sum ]]; then
-	cp go.sum "$bootstrap_dir/go.sum"
-else
-	: > "$bootstrap_dir/go.sum"
-fi
-cp "$bootstrap_dir/go.mod" "$bootstrap_dir/releasekit.mod"
-cp "$bootstrap_dir/go.sum" "$bootstrap_dir/releasekit.sum"
-
-mkdir -p bin
-GOWORK=off GOTOOLCHAIN=local go list -mod=mod -modfile="$bootstrap_dir/releasekit.mod" -m "$releasekit_module" >/dev/null
-GOWORK=off GOTOOLCHAIN=local go build -mod=mod -modfile="$bootstrap_dir/releasekit.mod" \
-	-o ./bin/releasekit "$releasekit_module/cmd/releasekit"
-rm -rf "$bootstrap_dir"
-trap - EXIT
-exec ./bin/releasekit "$@"
+GOWORK=off GOTOOLCHAIN=local exec go tool releasekit "$@"