doc: add note about crypto/x509 serial generation

Fixes #67675

Change-Id: I102c779c2a0ccaf6572be354fec3153a0a0a32eb
Reviewed-on: https://go-review.googlesource.com/c/go/+/631683
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

diff --git a/doc/next/6-stdlib/99-minor/crypto/x509/67675.md b/doc/next/6-stdlib/99-minor/crypto/x509/67675.md
new file mode 100644 (file)
index 0000000..4824f97
--- /dev/null
+++ b/doc/next/6-stdlib/99-minor/crypto/x509/67675.md
@@ -0,0 +1,3 @@
+[`CreateCertificate`] will now generate a serial number using a RFC 5280
+compliant method when passed a template with a nil [`Certificate.SerialNumber`]
+field, instead of failing.
\ No newline at end of file