ext: upgrade to googletest 1.11.x

Upgrade googletest to 1.11.x
upstream commit: 8306020a3e9eceafec65508868d7ab5c63bb41f7

sha1sum df8cdd26ee7cdf2a3d9c05a92d3630a96f406422 generated by command:
find . -type f ! -name SConscript ! -path "./.*" -print0 \
| sort -z | xargs -0 sha1sum | sha1sum

This upgrade is mainly for providing ConditionalMatcher support.

Change-Id: I27d971c02c59a3ad42c3002f1b4e1a8b18269c56
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/55384
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
207 files changed