Bumping gaia.json for 5 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/1b65f497aecd
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #19005 from mikehenrty/bug-967440-textutils

Bug 967440 textutils, r=vingtetun

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https://hg.mozilla.org/integration/gaia-central/rev/31e5ad687906
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 967440 - follow-up, move text utils test to shared test app

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https://hg.mozilla.org/integration/gaia-central/rev/d85fcb9b2c2e
Author: Vivien Nicolas <21@vingtetun.org>
Desc: Bug 967440 - Remove some reflows on the keypad. r=Rik

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https://hg.mozilla.org/integration/gaia-central/rev/572fd4747ceb
Author: Fernando Rodríguez Sela <frsela@tid.es>
Desc: Merge pull request #18489 from frsela/STK/Bug996976

Bug 996976 - Intermittent system/test/unit/icc_test.js | STK (icc) > launchStkCommand: STK_CMD_GET_INPUT | Error: expected false to equal true | "after each" hook | this.sinon is null

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https://hg.mozilla.org/integration/gaia-central/rev/68c74d9806be
Author: Fernando Rodriguez Sela <frsela@tid.es>
Desc: Bug 996976 - Intermittent system/test/unit/icc_test.js | STK (icc) > launchStkCommand: STK_CMD_GET_INPUT | Error: expected false to equal true | "after each" hook | this.sinon is null

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "2f45c7aacdb31a3236736aa24b167ddf3ab32c43", 
+    "revision": "1b65f497aecd37ee3c99a698a43aa63b6418ae64", 
     "repo_path": "/integration/gaia-central"
 }