Bumping gaia.json for 6 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/00a58a23f75d
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #23404 from alivedise/bugzilla/1039955/circular-activity

Bug 1039955 - Fix direct circular activity, r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/0f3181ebc4c6
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1039955 - Fix direct circular activity by closing front windows

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https://hg.mozilla.org/integration/gaia-central/rev/a7506a074484
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #23436 from wilsonpage/1059818

Bug 1059818 - Use 2.0 header colors

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https://hg.mozilla.org/integration/gaia-central/rev/e95c83b95a07
Author: Wilson Page <wilsonpage@me.com>
Desc: Bug 1059818 - Use 2.0 header colors

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https://hg.mozilla.org/integration/gaia-central/rev/b6f7ff2d2c06
Author: Staś Małolepszy <stas@mozilla.com>
Desc: Merge pull request #23418 from stasm/1059057-qps-index

Bug 1059057 - Copy localization indexes in pseudolocales. r=gandalf

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https://hg.mozilla.org/integration/gaia-central/rev/ad54e9bfd106
Author: Staś Małolepszy <stas@mozilla.com>
Desc: Bug 1059057 - Copy localization indexes in pseudolocales. r=gandalf
Bumping manifests a=b2g-bump