Update module github.com/BurntSushi/toml to v1.6.0

Author: renovate[bot]

go.mod

@@ -3,7 +3,7 @@ module github.com/moorara/gocert
 go 1.24.4
 
 require (
-	github.com/BurntSushi/toml v1.5.0
+	github.com/BurntSushi/toml v1.6.0
 	github.com/mitchellh/cli v1.1.5
 	github.com/stretchr/testify v1.11.1
 	gopkg.in/yaml.v3 v3.0.1

go.sum

@@ -1,5 +1,5 @@
-github.com/BurntSushi/toml v1.5.0 h1:W5quZX/G/csjUnuI8SUYlsHs9M38FC7znL0lIO+DvMg=
-github.com/BurntSushi/toml v1.5.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
+github.com/BurntSushi/toml v1.6.0 h1:dRaEfpa2VI55EwlIW72hMRHdWouJeRF7TPYhI+AUQjk=
+github.com/BurntSushi/toml v1.6.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
 github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
 github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
 github.com/Masterminds/semver/v3 v3.1.1 h1:hLg3sBzpNErnxhQtUy/mmLR2I9foDujNK030IGemrRc=