fix(test): the second curl stub needed the SC2317 disable too

a968e13 was pushed with shellcheck red. I chained the gates and the push in
one command, so a non-zero gate did not stop the push — the gate has to be a
condition, not a line of output I read afterwards.

Refs #188

test/forge-backends.test.sh

@@ -204,6 +204,7 @@ check "an empty collection is not an error" 0 "" \
 # gh exits non-zero on an HTTP error; curl does not without -f, and -f
 # discards the body that explains why. So the status is read explicitly.
 fake_forge 1 '[{"number":1}]'
+# shellcheck disable=SC2317 # invoked indirectly, by forge_api
 curl() {
   local hdr="" out=""
   while [ $# -gt 0 ]; do