CI: Improve docgen (DevExpress#7213)

Author: alexslavr

.github/workflows/docgen.yml

@@ -13,8 +13,6 @@ jobs:
           uses: actions/checkout@v4
           with:
             path: documentation
-            token: ${{ secrets.DXROBOT_PAT }}
-            ssh-key: ${{ secrets.DXROBOT_SK }}
             ref: ${{ github.ref_name }}
 
         - name: Checkout DevExtreme
@@ -24,6 +22,11 @@ jobs:
             repository: devexpress/devextreme
             ref: ${{ github.ref_name }}
 
+        - name: Set up .NET
+          uses: actions/setup-dotnet@v4
+          with:
+            dotnet-version: 6.0.x
+
         - name: NPM - devextreme
           working-directory: devextreme
           run: |
@@ -37,13 +40,8 @@ jobs:
 #Generation
         - name: Discover declarations
           working-directory: devextreme
-#TODO: Workaround. This should be removed following the changes in devextreme monorepo
-          run: |
-            if [[ ${{ github.ref_name }} == "23_2" ]]; then
-              npm run tools:discover-declarations
-            else    
-              npm run discover-declarations -- --artifacts ./artifacts/internal-tools            
-            fi
+          shell: bash
+          run: npm run tools:discover-declarations
 
         - name: Update topics
           working-directory: documentation
@@ -107,10 +105,3 @@ jobs:
                 -H "Authorization: Bearer ${{ secrets.DXROBOT_PAT }}" \
                 https://api.github.com/repos/${{ github.repository }}/pulls \
                 --data-binary @prdata.json
-
-        - name: Archive internal-tools artifacts
-          uses: actions/upload-artifact@v3
-          with:
-            name: internal-tools-artifacts
-            path: ./devextreme/artifacts/internal-tools/
-            retention-days: 7