Update mantle container image to latest HEAD

Flatcar Buildbot · Flatcar Buildbot · commit 1f8911b143ca · 2024-04-12T11:54:58.000Z
diff --git a/sdk_container/.repo/manifests/mantle-container b/sdk_container/.repo/manifests/mantle-container
@@ -1 +1 @@
-ghcr.io/flatcar/mantle:git-a262f21e2ee7c09f00e65681d9f70efc139d36ba
+ghcr.io/flatcar/mantle:git-346be89ebb4a2d951fca058c2be144ed6ca8b5b2

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-ghcr.io/flatcar/mantle:git-a262f21e2ee7c09f00e65681d9f70efc139d36ba`
	`1`	`+ghcr.io/flatcar/mantle:git-346be89ebb4a2d951fca058c2be144ed6ca8b5b2`