ci: use platformdirs for jupyter

Adds environment variable to acknowledge that we want to use `platformdirs` to determine which paths to use. See jupyter/jupyter_core#292 for more information.

Author: JoepVanlier

.github/workflows/pylake_docs_test.yml

@@ -2,6 +2,9 @@ name: docs build
 
 on: [push]
 
+env:
+  JUPYTER_PLATFORM_DIRS: "1"
+
 jobs:
     build_docs:
         runs-on: ubuntu-latest

.github/workflows/pylake_release.yml

@@ -5,6 +5,9 @@ on:
     tags:
       - v*
 
+env:
+  JUPYTER_PLATFORM_DIRS: "1"
+
 jobs:
   deploy:
     runs-on: ubuntu-latest

.github/workflows/pylake_test.yml

@@ -2,6 +2,10 @@ name: pytest
 
 on: [push]
 
+env:
+  # See: https://github.com/jupyter/jupyter_core/pull/292#issuecomment-1258284246
+  JUPYTER_PLATFORM_DIRS: "1"
+
 jobs:
   build:
     runs-on: ${{ matrix.os }}

.github/workflows/pylake_test_no_notebook.yml

@@ -2,6 +2,9 @@ name: no notebook deps
 
 on: [push]
 
+env:
+  JUPYTER_PLATFORM_DIRS: "1"
+
 jobs:
     build_no_nb:
         runs-on: ubuntu-latest