fix: use diff temp dir for pytest (#6449)

Signed-off-by: Dmitry Tokarev <dtokarev@nvidia.com>

.github/actions/pytest/action.yml

@@ -130,7 +130,7 @@ runs:
             echo "🔍 Mypy type checking enabled"
             MYPY_FLAG="--mypy"
           fi
-          PYTEST_CMD="pytest --continue-on-collection-errors -v --tb=short --basetemp=/tmp -o cache_dir=/tmp/.pytest_cache --junitxml=/workspace/test-results/${{ env.PYTEST_XML_FILE }} --durations=20 ${MYPY_FLAG} -m \"${{ inputs.pytest_marks }}\""
+          PYTEST_CMD="pytest --continue-on-collection-errors -v --tb=short --basetemp=/tmp/pytest_temp -o cache_dir=/tmp/.pytest_cache --junitxml=/workspace/test-results/${{ env.PYTEST_XML_FILE }} --durations=20 ${MYPY_FLAG} -m \"${{ inputs.pytest_marks }}\""
 
           # Detect GPU availability and conditionally add GPU flags
           GPU_FLAGS=""