Roll recipe dependencies (trivial).

This is an automated CL created by the recipe roller. This CL rolls
recipe changes from upstream projects (recipe_engine) into this repository.

The build that created this CL was
https://ci.chromium.org/b/8699181067711308241

recipe_engine:
18b950f51c
  18b950f (mohrr@google.com)
      [engine] Switch from future.utils.raise_() to raise

Please check the following references for more information:
- autoroller, https://chromium.googlesource.com/infra/luci/recipes-py/+/main/doc/workflow.md#autoroller
- rollback, https://chromium.googlesource.com/infra/luci/recipes-py/+/main/doc/workflow.md#rollback
- cross-repo dependencies, https://chromium.googlesource.com/infra/luci/recipes-py/+/main/doc/cross_repo.md

Use https://goo.gl/noib3a to file a bug.

R=iannucci@chromium.org

Recipe-Tryjob-Bypass-Reason: Autoroller
Ignore-Freeze: Autoroller
Bugdroid-Send-Email: False
Change-Id: I5eba79ba6a536c9f9554443bfe15067fc6146f08
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/7114822
Bot-Commit: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Recipe Roller <recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com>

infra/config/recipes.cfg

@@ -17,7 +17,7 @@
   "deps": {
     "recipe_engine": {
       "branch": "refs/heads/main",
-      "revision": "056ca0c61e3520980532f3cb9d300682ecca935d",
+      "revision": "18b950f51c1dc04bf6e4a82e553220ffa15753ce",
       "url": "https://chromium.googlesource.com/infra/luci/recipes-py.git"
     }
   },