[roll third_party/pigweed] pw_rpc: Rename call.h to call_context.h

Rename call.h to call_context.h to match the name of the class it
declares.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/59841

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: bc9a23f935766ba..5ce5de90d709a75
Roller-URL: https://ci.chromium.org/b/8836620873256690129
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8836620873256690129
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I238c2e88ad44479386673af1ae62d0dc262efb9b
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/60260
Bot-Commit: 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 bc9a23f..5ce5de9 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit bc9a23f935766bad14f18093de0bc1bd8b2bb325
+Subproject commit 5ce5de90d709a75c3b31ff18d613c7f8f67f5819