docs: update .all-contributorsrc [skip ci]

Author: allcontributors[bot]

.all-contributorsrc

@@ -47,7 +47,8 @@
         "code",
         "design",
         "review",
-        "doc"
+        "doc",
+        "test"
       ]
     },
     {
@@ -68,5 +69,6 @@
   "projectName": "CPP_SPM",
   "projectOwner": "cpp-lln-lab",
   "repoType": "github",
-  "repoHost": "https://github.com"
-}
+  "repoHost": "https://github.com",
+  "skipCi": true
+}