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

========

https://hg.mozilla.org/integration/gaia-central/rev/de501d4ec0a2
Author: albertopq <albert.pastor@gmail.com>
Desc: Merge pull request #26609 from albertopq/1105696-rtl-rocketbar

Bug 1105696 - Fixing rocketbar on RTL r=kgrandon

========

https://hg.mozilla.org/integration/gaia-central/rev/afdbfb439f94
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1105696 - Fixing rocketbar on RTL

========

https://hg.mozilla.org/integration/gaia-central/rev/dc1010f30c58
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #26606 from KevinGrandon/bug_1107106_system_template_literals

Bug 1107106 - Port system templates to use template literals r=alive

========

https://hg.mozilla.org/integration/gaia-central/rev/483a2aba9d6f
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1107106 - Port system templates to use template literals
Bumping manifests a=b2g-bump