CI: update doc install

.gitlab-ci.yml

@@ -7,7 +7,7 @@ stages:
 check:
   stage: build
   before_script:
-    - pip3 install black numpy pandas 'pylint<3' 'isort[colors]<6'
+    - pip3 install black pandas 'pylint<3' 'isort[colors]<6'
   script:
     - pip3 install --editable .[test]
     - black --check --diff --color .
@@ -20,10 +20,8 @@ check:
 
 documentation:
   stage: build
-  before_script:
-    - pip3 install sphinx numpy
   script:
-    - pip3 install --editable .
+    - pip3 install --editable .[doc]
     - sphinx-apidoc --separate -o docs src/finam
     - sphinx-build -W -b html docs docs/build
     - mv docs/build public/

setup.cfg

@@ -54,7 +54,7 @@ where = src
 
 [options.extras_require]
 doc =
-    sphinx>=3,<4
+    sphinx
     numpydoc>=1.1
 test =
     coverage[toml]>=5.2.1,<6