Update module dependencies.

go.mod

diff --git a/go.mod b/go.mod
index 8b84500..b5d2e78 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@
 
 go 1.16
 
-require github.com/BurntSushi/toml v0.4.1
+require github.com/BurntSushi/toml v1.1.0

go.sum

diff --git a/go.sum b/go.sum
index 4c4b384..ec0c385 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,2 @@
-github.com/BurntSushi/toml v0.4.1 h1:GaI7EiDXDRfa8VshkTj7Fym7ha+y8/XxIgD2okUIjLw=
-github.com/BurntSushi/toml v0.4.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+github.com/BurntSushi/toml v1.1.0 h1:ksErzDEI1khOiGPgpwuI7x2ebx/uXQNw7xJpn9Eq1+I=
+github.com/BurntSushi/toml v1.1.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=