Update the Zen theme to v4.

go.mod

@@ -1,5 +1,7 @@
 module github.com/frjo/zen-demo
 
-go 1.18
+go 1.22
 
-require github.com/frjo/hugo-theme-zen/v3 v3.9.0 // indirect
+require (
+	github.com/frjo/hugo-theme-zen/v4 v4.0.1 // indirect
+)

go.sum

@@ -1,10 +1,2 @@
-github.com/frjo/hugo-theme-zen/v3 v3.6.0 h1:EH+J9jn+yWQjbI5eu/e5otBnL86AfLgAe4aClpXQfuY=
-github.com/frjo/hugo-theme-zen/v3 v3.6.0/go.mod h1:hwFwwEwrOoL2Z8t11M3jqQyr0yOp7tpBRnp58S6gPYk=
-github.com/frjo/hugo-theme-zen/v3 v3.7.0 h1:VJd+P5Rf4QdETgn3BDU8YAYIfTYSIj3LpbxM2/taOCY=
-github.com/frjo/hugo-theme-zen/v3 v3.7.0/go.mod h1:hwFwwEwrOoL2Z8t11M3jqQyr0yOp7tpBRnp58S6gPYk=
-github.com/frjo/hugo-theme-zen/v3 v3.7.1 h1:HVjTckIkIXaNZi5pgZ7MFA6WWHCFikSW+a3BIs1ofQk=
-github.com/frjo/hugo-theme-zen/v3 v3.7.1/go.mod h1:hwFwwEwrOoL2Z8t11M3jqQyr0yOp7tpBRnp58S6gPYk=
-github.com/frjo/hugo-theme-zen/v3 v3.8.0 h1:ETo8FWAoRxXVmIgqVb0FuYoAXmtIA5sZYyE23rXagdM=
-github.com/frjo/hugo-theme-zen/v3 v3.8.0/go.mod h1:hwFwwEwrOoL2Z8t11M3jqQyr0yOp7tpBRnp58S6gPYk=
-github.com/frjo/hugo-theme-zen/v3 v3.9.0 h1:oUL2110My8dtwlthr25zMLP8ILLm4II2AxbYn3ix098=
-github.com/frjo/hugo-theme-zen/v3 v3.9.0/go.mod h1:hwFwwEwrOoL2Z8t11M3jqQyr0yOp7tpBRnp58S6gPYk=
+github.com/frjo/hugo-theme-zen/v4 v4.0.1 h1:gWotWHYdbMM6L8EXGuvbQaje3WmSbw47VyjAnG6vcyU=
+github.com/frjo/hugo-theme-zen/v4 v4.0.1/go.mod h1:ZPkZzwrQ7qIWkmXbG3MC+IZXBPCaEH9gMXubiPVMX64=

hugo.yaml

@@ -1,7 +1,7 @@
 ---
 title: "Zen demo site"
 baseURL: "https://zen-demo.xdeb.org/"
-theme: "github.com/frjo/hugo-theme-zen/v3"
+theme: "github.com/frjo/hugo-theme-zen/v4"
 languageCode: "en-GB"
 defaultContentLanguage: "en"
 pluralizelisttitles: false