bump encrypted_cookie_store version to 1.1.2

Change-Id: I1b20b2d3a8e452a803bf4be03325c4ab27d1b24f
Reviewed-on: https://gerrit.instructure.com/32184
Reviewed-by: Cody Cutrer <cody@instructure.com>
QA-Review: Simon Williams <simon@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: James Williams  <jamesw@instructure.com>