Update dependency python-dotenv to v0.21.1

Pipfile

@@ -9,11 +9,11 @@ name = "pypi"
 
 [packages]
 flask = "==2.0.3"
-python-dotenv = "==0.17.1"
+python-dotenv = "==0.21.1"
 flask-migrate = "==3.0.1"
 flask-sqlalchemy  = "==2.5.1"
 sqlalchemy = "==1.4.53"
-waitress = "==2.1.2"
+waitress = "==2.0.0"
 pyyaml = "==6.0.2"
 flask-cors = "==3.0.10"
 ldap3 = "==2.9.1"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "3e2ddadb687d67eee6974c15de24ee02b77941eae9901b4939249f7e2881110e"
+            "sha256": "66fb6d89e3b436b6676c612407a38336ae46c99cba3cff17779f0a344354b2ad"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -266,11 +266,12 @@
         },
         "python-dotenv": {
             "hashes": [
-                "sha256:00aa34e92d992e9f8383730816359647f358f4a3be1ba45e5a5cefd27ee91544",
+                "sha256:1c93de8f636cde3ce377292818d0e440b6e45a82f215c3744979151fa8151c49",
-                "sha256:b1ae5e9643d5ed987fc57cc2583021e38db531946518130777734f9589b3141f"
+                "sha256:41e12e0318bebc859fcc4d97d4db8d20ad21721a6aa5047dd59f090391cb549a"
             ],
             "index": "pypi",
-            "version": "==0.17.1"
+            "markers": "python_version >= '3.7'",
+            "version": "==0.21.1"
         },
         "pyyaml": {
             "hashes": [
@@ -401,12 +402,12 @@
         },
         "waitress": {
             "hashes": [
-                "sha256:7500c9625927c8ec60f54377d590f67b30c8e70ef4b8894214ac6e4cad233d2a",
+                "sha256:29af5a53e9fb4e158f525367678b50053808ca6c21ba585754c77d790008c746",
-                "sha256:780a4082c5fbc0fde6a2fcfe5e26e6efc1e8f425730863c04085769781f51eba"
+                "sha256:69e1f242c7f80273490d3403c3976f3ac3b26e289856936d1f620ed48f321897"
             ],
             "index": "pypi",
-            "markers": "python_full_version >= '3.7.0'",
+            "markers": "python_full_version >= '3.6.0'",
-            "version": "==2.1.2"
+            "version": "==2.0.0"
         },
         "werkzeug": {
             "hashes": [