Merge branch '16039-fuse-forward-slash-sub'

fixes #16039

Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom@tomclegg.ca>

diff --cc sdk/cwl/setup.py
index 62ceab2fa11c1895983cd518fb2d4370a49da986,07d6beffd68bef7370b25f74694d28f869250c2c..d4bb6d102a935780e13921fe546119244c0364e1
--- 1/sdk/cwl/setup.py
--- 2/sdk/cwl/setup.py
+++ b/sdk/cwl/setup.py
@@@ -60,8 -61,8 +61,8 @@@ setup(name='arvados-cwl-runner'
        ],
        test_suite='tests',
        tests_require=[
 -          'mock>=1.0',
 +          'mock>=1.0,<4',
            'subprocess32>=3.5.1',
        ],
-       zip_safe=True
-       )
+       zip_safe=True,
+ )