chore(deps): update actions to v4

Author: renovate[bot]

.github/workflows/demos_visual_tests_frameworks.yml

@@ -253,7 +253,7 @@ jobs:
     - name: Install tgz
       run: pnpm add -w ./devextreme-installer.tgz ./devextreme-dist-installer.tgz ./devextreme-react-installer.tgz ./devextreme-vue-installer.tgz ./devextreme-angular-installer.tgz
 
-    - uses: actions/setup-dotnet@v3
+    - uses: actions/setup-dotnet@v4
       with:
         dotnet-version: 5.0.408
 

.github/workflows/run-testcafe-on-gh-pages.yml

@@ -39,7 +39,7 @@ jobs:
                 python -m http.server 8083 &
 
             - name: Checkout main branch
-              uses: actions/checkout@v2
+              uses: actions/checkout@v4
               with:
                 ref: ${{ env.TARGET_BRANCH }}
                 path: devextreme