Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/adb61c307cb9
Author: Arnau <arnau@arnaumarch.com>
Desc: Merge pull request #17447 from rnowm/986055

Bug 986055 - [VDR] Update buttons and header in BB edit mode r=pivanov

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https://hg.mozilla.org/integration/gaia-central/rev/7f491c738353
Author: rnowm <arnau@arnaumarch.com>
Desc: Bug 986055 - [VDR] Update buttons and header in BB edit mode

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https://hg.mozilla.org/integration/gaia-central/rev/327768736ca9
Author: Arnau <arnau@arnaumarch.com>
Desc: Merge pull request #17563 from rnowm/986433

Bug 986433 - [Messages][Refresh] Messages Inbox edit mode r=Borja

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https://hg.mozilla.org/integration/gaia-central/rev/478ac56f4e20
Author: rnowm <arnau@arnaumarch.com>
Desc: Bug 986433 - [Messages][Refresh] Messages Inbox edit mode
Bumping manifests a=b2g-bump