Linux: fixed user account for correct permissions

Author: mshabunin

.github/workflows/OCV-PR-Linux.yaml

@@ -50,7 +50,7 @@ jobs:
       # fail-fast: true
       # max-parallel: 3
       fail-fast: false
-      max-parallel: 3
+      max-parallel: 6
       matrix:
         version:
           - '24.04'
@@ -95,6 +95,7 @@ jobs:
         - /home/opencv-cn/ci_cache/opencv:/opt/.ccache
         - /home/opencv-cn/binaries_cache:/opt/binaries_cache
         - /home/opencv-cn/dnn-models:/opt/dnn-models
+      # NOTE: RU config
       options: '--user root:root'
     env:
       ANT_HOME: '/usr/share/ant'
@@ -126,6 +127,11 @@ jobs:
 
     steps:
 
+    - run: |
+        ls -lR /__w/ | grep root
+        chown -Rc 1000:1000 /__w/
+        exit 1
+
     - name: Checkout workflow repository
       uses: actions/checkout@v4
       with: