Add dateutil to pipfile

Pipfile

@@ -13,6 +13,7 @@ psycopg2-binary = "*"
 python-dotenv = "*"
 apscheduler = "*"
 python-telegram-bot = "*"
+python-dateutil = "*"
 
 [requires]
 python_version = "3"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "4827bab3abdc69cd1319b4ad833d48439e8a040a4fb264ea0abe65ffa41d8dd7"
+            "sha256": "d30abf65dac00c961cad98851fb0582b0b0322d8f04dc6eff4f853ea7695b05c"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -168,6 +168,14 @@
             ],
             "version": "==2.19"
         },
+        "python-dateutil": {
+            "hashes": [
+                "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c",
+                "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"
+            ],
+            "index": "pypi",
+            "version": "==2.8.1"
+        },
         "python-dotenv": {
             "hashes": [
                 "sha256:440c7c23d53b7d352f9c94d6f70860242c2f071cf5c029dd661ccb22d64ae42b",