Update marian-dev submodule to use its master branch

[abhi-agg]

Currently, the marian-dev submodule of this repository links to wasm branch of marian-dev

Change it back to master branch.

[jerinphilip]

Are you on this @abhi-agg? I can couple this a workflow file rearrangement now that are no master / wasm differences.

[abhi-agg]

I can do this but @XapaJIaMnu 's PR should be merged to browsermt/marian-dev master before we make this switch. Otherwise, things will not work.

@XapaJIaMnu Could you please merge your change to browsermt/marian-dev's master? We can start this task as soon as you merge it.

Doing this will also make this PR simpler because @qianqianzhu will not have to make a marian-dev submodule change there. She shouldn't be dealing with the failures pertaining to this change in her PR (which currently is happening) 👍