Update google.golang.org/protobuf to v1.26.0

This requires setting go_package to a path in yamlpb_test.proto. See
https://github.com/protocolbuffers/protobuf-go/commit/8b366e8 for
details.

The other protos in this repository already comply.

Tested: ./cobaltb.py build && ./cobaltb.py test --tests go
Bug: 35565
Change-Id: Iecd2f58cf3664cda9a51365e0675b47e579153cd
Reviewed-on: https://fuchsia-review.googlesource.com/c/cobalt/+/504464
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
Fuchsia-Auto-Submit: Tamir Duberstein <tamird@google.com>
Reviewed-by: Jared Weinstein <jaredweinstein@google.com>
diff --git a/src/bin/config_parser/src/yamlpb/yamlpb_test.proto b/src/bin/config_parser/src/yamlpb/yamlpb_test.proto
index e337777..ac00d8a 100644
--- a/src/bin/config_parser/src/yamlpb/yamlpb_test.proto
+++ b/src/bin/config_parser/src/yamlpb/yamlpb_test.proto
@@ -7,7 +7,7 @@
 
 package yamlpb;
 
-option go_package = ".;yamlpb";
+option go_package = "src/yamlpb";
 
 enum TestEnum {
   VAL0 = 0;
diff --git a/third_party/go/src/google.golang.org/protobuf b/third_party/go/src/google.golang.org/protobuf
index 3f7a61f..f2d1f6c 160000
--- a/third_party/go/src/google.golang.org/protobuf
+++ b/third_party/go/src/google.golang.org/protobuf
@@ -1 +1 @@
-Subproject commit 3f7a61f89bb6813f89d981d1870ed68da0b3c3f1
+Subproject commit f2d1f6cbe10b90d22296ea09a7217081c2798009