bump argotk

pkgs/argotk/pin.json

@@ -2,8 +2,8 @@
   "fetch": {
     "args": {
       "fetchSubmodules": false,
-      "rev": "20c26b93e2bbb660f8e1fe4b615f67f3b461a62f",
-      "sha256": "0id22r02dp4c08bwasi49pmpqglp599mxzx9jfxk45fah1n3jls3",
+      "rev": "5e42e6db649dea7f18e4ee03c4bbabd038f9179f",
+      "sha256": "0zc0xa1qb365bins5qlpg2sx8zfk6y1djisn65hqz5iyd5512wsf",
       "url": "https://xgitlab.cels.anl.gov/argo/argotk.git"
     },
     "fn": "fetchgit"