chore: add placeholder version in README.md file (pingcap#12493)

ti-chi-bot · web-flow · commit f18090a6d30a · 2026-01-15T07:59:31.000Z
diff --git a/README.md b/README.md
@@ -21,4 +21,4 @@ For more details, see [DM README](./README_DM.md) and [TiCDC README](./README_Ti
 
 **TiFlow** is under the Apache 2.0 license. See the [LICENSE](./LICENSE) file for details.
 
-<!-- VERSION_PLACEHOLDER: v8.5.5 -->
+<!-- VERSION_PLACEHOLDER: v8.5.6 -->

Original file line number	Diff line number	Diff line change
`@@ -21,4 +21,4 @@ For more details, see [DM README](./README_DM.md) and [TiCDC README](./README_Ti`
`21`	`21`
`22`	`22`	`TiFlow is under the Apache 2.0 license. See the [LICENSE](./LICENSE) file for details.`
`23`	`23`
`24`		`-<!-- VERSION_PLACEHOLDER: v8.5.5 -->`
	`24`	`+<!-- VERSION_PLACEHOLDER: v8.5.6 -->`