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

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https://hg.mozilla.org/integration/gaia-central/rev/f76614c49e29
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #24140 from bebef1987/xfail_ftu

xfail test_ftu_skip_tour because Bug 1068616 - Date&Time settings screen...

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https://hg.mozilla.org/integration/gaia-central/rev/1a7cb84fb28b
Author: Bebe <bebe@mozilla.ro>
Desc: xfail test_ftu_skip_tour because Bug 1068616 - Date&Time settings screen not skipped when data connection is available

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https://hg.mozilla.org/integration/gaia-central/rev/b9cc546060b0
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #24101 from zacc/bug_1060381

Bug 1060381 - test_gallery_crop_photo is failing - refactor to reference...

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https://hg.mozilla.org/integration/gaia-central/rev/da46174fba9a
Author: Zac <zcampbell@mozilla.com>
Desc: Bug 1060381 - test_gallery_crop_photo is failing - refactor to reference image metadata
Bumping manifests a=b2g-bump