gram breaks CI

[ringabout]

#16508 #16489

  FAIL: gram c
  Test "gram" in category "nimble-packages-1"
  Failure: reBuildFailed
  package test failed
  $ nim c -r --gc:arc --define:danger tests/test.nim
  Hint: used config file '/Users/runner/work/Nim/Nim/config/nim.cfg' [Conf]
  Hint: used config file '/Users/runner/work/Nim/Nim/config/config.nims' [Conf]
  .................................
  /Users/runner/work/Nim/Nim/pkgstemp/gram/tests/test.nim(3, 8) Error: cannot open file: gram

[ringabout]

Ref #17513

closed