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/8749090102734064193

recipe_engine:
https://chromium.googlesource.com/infra/luci/recipes-py/+/42e0c97c4954dfedc6ab26b64646cfd742ac340f
  42e0c97 (iannucci@chromium.org)
      Revert "Remove a bit of sys.path hackery."

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.

Recipe-Tryjob-Bypass-Reason: Autoroller
Ignore-Freeze: Autoroller
Bugdroid-Send-Email: False
Change-Id: Ide58c51ff6fc05ee1f87ee57569e78734353ddce
Reviewed-on: https://fuchsia-review.googlesource.com/c/infra/recipes/+/1041164
Commit-Queue: GI Roller <global-integration-roller@fuchsia-infra.iam.gserviceaccount.com>
diff --git a/infra/config/recipes.cfg b/infra/config/recipes.cfg
index 2e71fba..61e32f7 100644
--- a/infra/config/recipes.cfg
+++ b/infra/config/recipes.cfg
@@ -18,7 +18,7 @@
   "deps": {
     "recipe_engine": {
       "branch": "refs/heads/main",
-      "revision": "77630a16be82c17cf2d9d190e3c8821cb2d52aaf",
+      "revision": "42e0c97c4954dfedc6ab26b64646cfd742ac340f",
       "url": "https://chromium.googlesource.com/infra/luci/recipes-py"
     }
   },