ci/update_traces_checksum: fix regex detecting PIGLIT_REPLAY_DEVICE_NAME in job logs

`declare -x` is one way to export a variable, but there is also `export`.
LAVA uses the former, while CI-tron uses the latter.

LAVA always adds quotes, while CI-tron uses python's `shlex.quote()` [1]
which only adds the quotes when necessary, so let's make those optional
in the regex as well.

[1] https://docs.python.org/3/library/shlex.html#shlex.quote

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37215>

bin/ci/update_traces_checksum.py

@@ -25,7 +25,7 @@ from gitlab_common import (get_gitlab_project, read_token, wait_for_pipeline,
 
 
 DESCRIPTION_FILE = "export PIGLIT_REPLAY_DESCRIPTION_FILE=.*/install/(.*)$"
-DEVICE_NAME = "declare -x PIGLIT_REPLAY_DEVICE_NAME='(.*)'$"
+DEVICE_NAME = "(?:declare -x|export) PIGLIT_REPLAY_DEVICE_NAME='?([^']*)'?$"
 
 
 def gather_results(