dev env: re-add "dill" to fix pipeline

https://github.com/fphammerle/free-disk/commit/df47c298867b7c4705dd14878fe0831ef4597b5e
https://github.com/fphammerle/free-disk/commit/2ee70331880ecfd09460c2201033cd595146b9fc
https://github.com/fphammerle/free-disk/commit/4ebe0aa97fca1971d37c876169df50073a06ace0

Pipfile

@@ -31,6 +31,11 @@ tomli = {markers = "python_version < '3.11'"}
 # >     import wrapt
 # > ModuleNotFoundError: No module named 'wrapt'
 wrapt = "*"
+# remove `"markers": "python_version >= '3.11'"` to workaround:
+# >   File "[...]/lib/python3.7/site-packages/pylint/lint/parallel.py", line 13, in <module>
+# >     import dill
+# > ModuleNotFoundError: No module named 'dill'
+dill = "*"
 
 [requires]
 python_version = "3"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "04f04b3e01641231dd3be0d0b26777c913d450cdf81eb9a2597649acef7ef80a"
+            "sha256": "9f684f2975f71a474cbdee4a190ae7e74e09a7a443412ed7a45c90eea2a06dfb"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -144,7 +144,7 @@
                 "sha256:76b122c08ef4ce2eedcd4d1abd8e641114bfc6c2867f49f3c41facf65bf19f5e",
                 "sha256:cc1c8b182eb3013e24bd475ff2e9295af86c1a38eb1aff128dac8962a9ce3c03"
             ],
-            "markers": "python_version >= '3.11'",
+            "index": "pypi",
             "version": "==0.3.7"
         },
         "exceptiongroup": {