config: regenerate upload config

This is an automated CL which updates the generated upload config.

[git-generate]
go generate ./internal/configgen

Change-Id: I73f2bd045dcfc3f1cb140fed47f912ebc4319a6b
Reviewed-on: https://go-review.googlesource.com/c/telemetry/+/699755
Auto-Submit: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Hongxiang Jiang <hxjiang@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

config/config.json

diff --git a/config/config.json b/config/config.json
index 847226e..435eb2b 100644
--- a/config/config.json
+++ b/config/config.json
@@ -482,6 +482,7 @@
 				"v1.25.1",
 				"v1.25.2",
 				"v1.25.3",
+				"v1.25.4",
 				"v1.26.0",
 				"v1.26.1"
 			],