Post-release of v12.0.3 by @rtyley: set snapshot version

gu-scala-library-release[bot] · web-flow · commit f6c892631f4e · 2025-12-02T11:29:20.000Z
Setting snapshot version after @rtyley published https://github.com/guardian/etag-caching/releases/tag/v12.0.3
diff --git a/version.sbt b/version.sbt
@@ -1 +1 @@
-ThisBuild / version := "12.0.3"
+ThisBuild / version := "12.0.4-SNAPSHOT"
