Update readthedocs.yaml

.readthedocs.yaml

@@ -3,25 +3,13 @@ version: 2
 build:
   os: "ubuntu-22.04"
   tools:
-    python: "miniconda3-3.12-24.1" # note that libmamba-solver is available since 22.1
-    nodejs: "20" # maybe need to be also miniconda
-  jobs:
-    post_create_environment:
-      - python -m pip install --no-cache-dir .[docs]
-      - python -m pip install --exists-action=w --no-cache-dir -r docs/requirements.txt
-      - rabbitmq-server -detached
-      - sleep 10
-      - rabbitmq-diagnostics status
-      - verdi presto
-      - verdi daemon start
-      - verdi status
-      - aiida-pseudo install sssp -x PBEsol
-      - verdi group list
-      - cat /proc/cpuinfo | grep processor | wc -l
-
-conda:
-  environment: docs/environment.yml
+    python: "3.11"
 
 # Build from the docs/ directory with Sphinx
 sphinx:
   configuration: docs/source/conf.py
+
+# Explicitly set the version of Python and its requirements
+python:
+  install:
+    - requirements: docs/requirements.txt