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

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https://hg.mozilla.org/integration/gaia-central/rev/4f37233ad65c
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #26335 from ADLR-es/highlight-accented

Bug 1088706 - Accented characters like ñ are not highlighted after doing...

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https://hg.mozilla.org/integration/gaia-central/rev/a95c571b0a95
Author: Adrián de la Rosa <hola@adlr.es>
Desc: Bug 1088706 - Accented characters like ñ are not highlighted after doing a search with them
Bumping manifests a=b2g-bump