DevOps: update docs dependencies

Some dependencies made the RTD build to break.
This dependencies update fixes it. Moreover, MyST
notebook has finally released a stable 1.0 version.

pyproject.toml

@@ -11,7 +11,7 @@ authors = [
 readme = 'README.md'
 license = {file = 'LICENSE.txt'}
 classifiers = [
-    'Development Status :: 4 - Beta',
+    'Development Status :: 5 - Production/Stable',
     'Framework :: AiiDA',
     'License :: Other/Proprietary License',
     'Operating System :: POSIX :: Linux',
@@ -47,13 +47,13 @@ tests = [
     'pytest-regressions~=2.3',
 ]
 docs = [
-    'myst-nb@git+https://github.com/executablebooks/MyST-NB.git',
+    'myst-nb~=1.0.0',
     'sphinx~=6.2.1',
     'sphinx-copybutton~=0.5.2',
     'sphinx-book-theme~=1.0.1',
     'sphinx-design~=0.4.1',
     'sphinxcontrib-details-directive~=0.1.0',
-    'sphinx-autoapi~=2.0.1',
+    'sphinx-autoapi~=3.0.0',
     'myst_parser~=1.0.0',
     'sphinx-togglebutton',
 ]