codecparsers: update to gst-vaapi-branch commit 2d53b69.

c4ace00 h264parse: fix collection of access units to preserve config headers
0f9f7c9 h264parse: improve conditions for skipping NAL units
9ffb25c h264parse: introduce new state tracking variables
64955d3 h264parse: fix and optimize NAL collection function
13cd2a3 h264: clarifications and documentation fixes
53e7dd1 h264: fix identification of EOSEQ and EOS NALs
18f0de0 h264: fix memory leak in GstH264PPS
fdcb54c h264: fix typo in GstH264VUIParams description
fd4dae9 vp8: move up built-in range decoder private data

diff --git a/ext/codecparsers b/ext/codecparsers
index d6325ac..2d53b69 160000 (submodule)
--- a/ext/codecparsers
+++ b/ext/codecparsers
@@ -1 +1 @@
-Subproject commit d6325ac0f17df46140355d3a43e54319e7bb2e36
+Subproject commit 2d53b693e8c0cce8f395bce0cb1817c51db345af