all: start v1.36.2-devel

Change-Id: I0dd6425a197595757db28fbdd84f81f048a5ef36
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/641016
Reviewed-by: Chressie Himpel <chressie@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

internal/version/version.go

@@ -53,7 +53,7 @@ const (
 	Major      = 1
 	Minor      = 36
 	Patch      = 2
-	PreRelease = ""
+	PreRelease = "devel"
 )
 
 // String formats the version string for this module in semver format.