[third_party/pigweed] Roll 5 commits

9a0e93fe506c9f5 *: Replace `string_view&` with `string_view`
1e8d9d0656f836f docs: Add GitHub pull request template
abdcf98492e16e7 pw_spi_mcuxpresso: Rename flexspi to flexio_spi
1faa03a619f99f7 pw_spi_mcuxpresso: Fix Bazel build
9c2c92297a5165d pw_format: Add support for core::fmt style format

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: c8bdb2434d1efa8..9a0e93fe506c9f5
Roller-URL: https://ci.chromium.org/b/8749920300216893441
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I23145b8d06b96be5d71559a53a2b911ba7daa84f
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/205852
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index c8bdb24..9a0e93f 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit c8bdb2434d1efa8388042b181f03eb8f11bf1547
+Subproject commit 9a0e93fe506c9f594fdb4927a5e663c4465e12e2