Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/2f5c1a1d7033
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #13944 from askeing/942061

Bug 942061 - Fix test_send_imap_email.py and test_setup_imap_email.py

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https://hg.mozilla.org/integration/gaia-central/rev/78fbf11fbbce
Author: askeing <askeing@gmail.com>
Desc: Bug 942061 - Fix test_send_imap_email.py and test_setup_imap_email.py