Roll RTS model from r-EHXiKp_T4qYEAQU... to UKdftllk_Jvb_Smpx...

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/rts-mac-amd64-chromium-autoroll
Please CC chrome-browser-infra@google.com,guterman@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Chromium: https://bugs.chromium.org/p/chromium/issues/entry

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Tbr: guterman@google.com
Change-Id: I939f3aeff085b9997fd96f41278cce83bdf1a959
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4351916
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1119117}

DEPS

@@ -889,7 +889,7 @@ deps = {
       'packages': [
         {
           'package': 'chromium/rts/model/mac-amd64',
-          'version': 'r-EHXiKp_T4qYEAQUe2xvYxSaRy55v1pxsM8__7X1lwC',
+          'version': 'UKdftllk_Jvb_Smpx1EDOFYpBp8N_D1y4tZhqlydsm4C',
         },
       ],
       'dep_type': 'cipd',