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

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https://hg.mozilla.org/integration/gaia-1_3/rev/73b775a71396
Author: AndreiH <andrei.hutusoru@softvision.ro>
Desc: Merge pull request #18224 from viorelaioia/bug_991679

Bug 991679 - [v1.3] Investigate and try to fix test_ftu_skip_tour.TestFt...

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https://hg.mozilla.org/integration/gaia-1_3/rev/7837ae72307d
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 991679 - [v1.3] Investigate and try to fix test_ftu_skip_tour.TestFtu fails on v1.3
Bumping manifests a=b2g-bump
Bug 944353 - If we've encountered an error while decoding an image and the main thread has asked to do more decoding of that image before the main thread has acknowledged the error then refuse to decode more. r=seth, a=1.3+
Bug 944353 - If we've had a decoder error then the image is not usable. r=seth, a=1.3+

This matches what RasterImage will do.
Bug 969226 - Check if there is enough data to read u32 to avoid buffer overflow. r=bgirard, a=1.3+
Bug 991471 - Fix offset when setting host on URL. r=mcmanus, a=1.3+
Bug 987771 - Trigger a repaint if we create an APZC with a pre-existing displayport that doesn't cover the composition bounds. r=botond, a=bajaj
Bug 993548 - Free load buffer before starting script compile. r=khuey, a=bajaj
Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/491ceeb1a118
Author: Gareth Aye <gaye@mozilla.com>
Desc: Merge pull request #18135 from gaye/bug-974554

Bug 974554 - CalDAV parser should accept ical inside xml comments nested in <calendar-data> elements r=millermedeiros
Bumping manifests a=b2g-bump
Bug 991988 - Resolve HostName of either MMS Proxy or MMSC. r=vyang, a=bajaj
Bug 818968 - Disable failing b2g reftests so we can move the rest to AWS - pass 1, r=jgriffin, a=test-only