Update mantle container image to latest HEAD

Flatcar Buildbot · Flatcar Buildbot · commit 140c425cad77 · 2023-11-07T10:47:35.000Z
diff --git a/sdk_container/.repo/manifests/mantle-container b/sdk_container/.repo/manifests/mantle-container
@@ -1 +1 @@
-ghcr.io/flatcar/mantle:git-1276c732fb6e7fd0878429afe8dca7be2b2ef720
+ghcr.io/flatcar/mantle:git-54f2aef0bb3bce7a61403bb2a4b20771c917cf09

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-ghcr.io/flatcar/mantle:git-1276c732fb6e7fd0878429afe8dca7be2b2ef720`
	`1`	`+ghcr.io/flatcar/mantle:git-54f2aef0bb3bce7a61403bb2a4b20771c917cf09`