Update actions to new requirements layout

Author: jorgepiloto

.github/workflows/ci.yml

@@ -90,7 +90,7 @@ jobs:
       - name: Install ansys-dpf-core
         shell: cmd
         run: |
-          pip install -r requirements_build.txt
+          pip install -r requirements/requirements_build.txt
           python setup.py bdist_wheel
           FOR /F %%a in ('dir /s/b dist\*.whl') do SET WHEELPATH=%%a
           ECHO %WHEELPATH%
@@ -114,7 +114,7 @@ jobs:
 
       - name: Install documentation packages for Python
         run: |
-          pip install -r requirements_docs.txt
+          pip install -r requirements/requirements_docs.txt
 
       - name: Build Documentation
         shell: cmd

.github/workflows/style.yml

@@ -33,7 +33,7 @@ jobs:
 
       - name: Install style requirements
         run: |
-          pip install -r requirements_style.txt --disable-pip-version-check
+          pip install -r requirements/requirements_style.txt --disable-pip-version-check
 
       - name: Codespell
         run: |