[roll third_party/pigweed] pw_package: Add support for downloading CRLSet

Add support in pw_package for downloading CRLSet. The CRLSet will be
used by the pw_tls_client module for certificate revocation checks.

Original-Bug: 396
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/48460

third_party/pigweed Rolled-Commits: 1e61ad3c373cfaf..7340184e635006d
Roller-URL: https://ci.chromium.org/b/8843600861010338673
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8843600861010338673
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I574f7e3906bb71f376111e83611b0a9a8fe50422
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/50585
Reviewed-by: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 1e61ad3..7340184 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 1e61ad3c373cfafabd1059d9448b59560e2f058e
+Subproject commit 7340184e635006d7edf38fa338a027a5adde5c1e