dosfstools: temporarily revert upgrade that breaks tests
See #15394
Revert "dosfstools: Enable compat symlinks"
This reverts commit 346482c8d586de299ff8f457d69653917a4d62e2.
Revert "dosfstools: 3.0.28 -> 4.0"
This reverts commit 135fe56183a2c125a777ce59aa5e78f51f3dfec2.