chore(deps): update module github.com/hbstack/header to v0.12.4

Author: renovate[bot]

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/hbstack/base v0.4.1 // indirect
 	github.com/hbstack/blog v0.24.1 // indirect
 	github.com/hbstack/footer v0.2.10 // indirect
-	github.com/hbstack/header v0.12.3 // indirect
+	github.com/hbstack/header v0.12.4 // indirect
 	github.com/hugomods/base v0.4.0 // indirect
 	github.com/hugomods/hugopress v0.2.3 // indirect
 	github.com/hugomods/icons v0.6.0 // indirect

go.sum

@@ -38,6 +38,7 @@ github.com/hbstack/header v0.12.0/go.mod h1:MkFJjAqVs/pgOEBjdCzBTdjT6q43It0PGvZh
 github.com/hbstack/header v0.12.1/go.mod h1:MkFJjAqVs/pgOEBjdCzBTdjT6q43It0PGvZh56OkdB4=
 github.com/hbstack/header v0.12.2/go.mod h1:Tr1ae4nQQ43FQM+z/GcCPwTANmuJ8NaUpzcEcN4ynTg=
 github.com/hbstack/header v0.12.3/go.mod h1:Tr1ae4nQQ43FQM+z/GcCPwTANmuJ8NaUpzcEcN4ynTg=
+github.com/hbstack/header v0.12.4/go.mod h1:4XKdpn0KyL9VN8tFRsVqU8AF5eOM1Gw5+vvhXlsF/X0=
 github.com/hugomods/base v0.2.0 h1:O/ZzXPA9LJvNbkfmx0nJX9LHjEnQjAPmCwd2APwhnPU=
 github.com/hugomods/base v0.2.0/go.mod h1:hnWCPbVxuhXBwdFax3mmbMlWKmIo/7OP36MCLOyHtT4=
 github.com/hugomods/base v0.3.0/go.mod h1:hnWCPbVxuhXBwdFax3mmbMlWKmIo/7OP36MCLOyHtT4=