Install unreleased pycrdt

Author: davidbrochart

.github/workflows/test.yml

@@ -51,6 +51,7 @@ jobs:
       - name: Install dependencies
         run: |
           pip install --group test .
+          pip install git+https://github.com/y-crdt/pycrdt --force-reinstall
           cd tests; npm install
       - name: Check types
         run: |

environment-dev.yml

@@ -4,3 +4,4 @@ channels:
 dependencies:
   - pip
   - nodejs
+  - rust