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

========

https://hg.mozilla.org/integration/gaia-2_1/rev/0249db7a724b
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #25109 from alivedise/bugzilla/1076327_v2.1_v5b/onshowwindow-should-not-display

Bug 1076327 - Ignore screenchange event if lockcreen is not ready

========

https://hg.mozilla.org/integration/gaia-2_1/rev/52eec80ded45
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1076327 - Ignore screenchange if lockscreen is not ready to be opened

========

https://hg.mozilla.org/integration/gaia-2_1/rev/c900e3368018
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #25360 from gmarty/Bug-1082667-The-minimised-status-bar-width-must-consider-the-software-home-button-v2.1

Bug 1082667 - The minimised status bar width must consider the software ...

========

https://hg.mozilla.org/integration/gaia-2_1/rev/7c4d52962f7a
Author: Guillaume Marty <edo999@gmail.com>
Desc: Bug 1082667 - The minimised status bar width must consider the software home button
Bumping manifests a=b2g-bump