ci: tolerate stale host staticcheck toolchains

scripts/lint.sh

@@ -34,4 +34,16 @@ echo "[lint] go vet"
 go vet ./...
 
 echo "[lint] staticcheck (pedantic code-smell pass)"
-staticcheck ./...
+set +e
+staticcheck_output="$(staticcheck ./... 2>&1)"
+staticcheck_rc=$?
+set -e
+if [[ "${staticcheck_rc}" -ne 0 ]]; then
+  printf '%s\n' "${staticcheck_output}" >&2
+  if grep -q "Staticcheck was built with go" <<<"${staticcheck_output}" \
+    && [[ "${ANANKE_STATICCHECK_REQUIRED:-0}" != "1" ]]; then
+    echo "[lint] warning: skipping staticcheck because the host staticcheck binary was built with an older Go toolchain" >&2
+  else
+    exit "${staticcheck_rc}"
+  fi
+fi