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

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https://hg.mozilla.org/integration/gaia-central/rev/c27cd24e740a
Author: Staś Małolepszy <stas@mozilla.com>
Desc: Merge pull request #22021 from stasm/1036380-pseudo-kbd-p1

Bug 1036380 - Use English keyboard for pseudolanguages. r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/b600bb910933
Author: Staś Małolepszy <stas@mozilla.com>
Desc: Bug 1036380 - Use English keyboard for pseudolanguages. r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/1eefd2ea9b18
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #22149 from etiennesegonzac/bug-1043857

Bug 1043857 - Follow up to bug 1042083, launch time regression r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/995f3e0353a1
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 1043857 - Follow up to bug 1042083, launch time regression
Bumping manifests a=b2g-bump