refactor: revert pyproject-api to 1.8.0

Author: JuroOravec

requirements-ci.txt

@@ -42,7 +42,7 @@ pydantic==2.10.6
     # via -r requirements-ci.in
 pydantic-core==2.27.2
     # via pydantic
-pyproject-api==1.9.0
+pyproject-api==1.8.0
     # via tox
 sqlparse==0.5.3
     # via django

requirements-dev.txt

@@ -85,7 +85,7 @@ pydantic-core==2.27.2
     # via pydantic
 pyflakes==3.2.0
     # via flake8
-pyproject-api==1.9.0
+pyproject-api==1.8.0
     # via tox
 pytest==8.3.5
     # via -r requirements-dev.in