Adjusts workspace ownership for Docker compatibility

Adds a step to change ownership of the workspace directory
to ensure compatibility with Docker's file system permissions.

Relates to improving CI workflow reliability.

Signed-off-by: Christopher Turner <christopher.g.turner@intel.com>

Author: cgturner1

.github/workflows/testbench.yml

@@ -45,6 +45,9 @@ jobs:
              sudo apt-get -y install valgrind alsa-utils libasound2-dev ninja-build
              octave octave-signal
 
+      - name: Adjust ownership for Docker
+        run: sudo chown -R 1000:1000 /github/workspace
+
       # testbench needs some topologies.
       - name: build test topologies
         continue-on-error: true