Fixed Hank's GitHub username

Author: dhaney-stacks

.github/workflows/_slack-pr-nag.yml

@@ -35,7 +35,7 @@ jobs:
               "dhaney-stacks": "U09538PV0RZ",
               "federico-stacks": "U08ASJ1LKEV",
               "francesco-stacks": "U07MCETKTKN",
-              "hank-stacks": "U068W8VBSQM",
+              "hstove-stacks": "U068W8VBSQM",
               "radu-stacks": "U0ANRRXD080",
               "rob-stacks": "U07UNFAS4BD",
               "simone-stacks": "U09NA1TP8PK"