[gjs] Created tag 1.54.3

[Philip Chimento <pchimento src gnome org>]

The unsigned tag '1.54.3' was created.

Tagger: Philip Chimento <philip chimento gmail com>
Date: 1542042971 -0500

    Version 1.54.3
    
    - Closed bugs and merge requests:
      * object: Fix write-only properties [!246, Philip Chimento]
      * SIGSEGV when exiting gnome-shell [#212, !247, Andrea Azzarone]
      * SelectionData.get_targets crashes with "Unable to resize vector" [#201,
        !241, Philip Chimento]
      * Gnome-shell crashes on destroying cached param specs [#213, !240, Marco
        Trevisan]
      * GType memleak fixes [!244, Marco Trevisan]
      * Fix build with --enable-dtrace and create CI job to ensure it doesn't break
        in the future [#196, !253, Philip Chimento]

Changes since the last tag '1.54.2':

Andrea Azzarone (1):
      engine: mozjs60 changes for GC sweeping tracking

Marco Trevisan (Treviño) (3):
      jsapi-util: add ability to ref added GjsAutoParam
      object: add reference to the property pspec we cache
      gtype: delete heap wrappers on gtype removal

Philip Chimento (5):
      object: Fix write-only properties
      arg: Handle case with null array and garbage length
      object: Fix build with --enable-dtrace
      build: Stable branch version bump
      release: Prepare for 1.54.3