mod: update dependencies

This is the result of running

    go get -u
    go mod tidy

go.mod

@@ -1,32 +1,35 @@
 module github.com/ferdinandyb/maildir-rank-addr
 
-go 1.18
+go 1.22.0
+
+toolchain go1.23.4
 
 require (
-	github.com/emersion/go-message v0.16.0
+	github.com/emersion/go-message v0.18.2
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/spf13/pflag v1.0.5
-	github.com/spf13/viper v1.13.0
+	github.com/spf13/viper v1.19.0
 	github.com/stretchr/testify v1.10.0
-	golang.org/x/text v0.3.7
+	golang.org/x/text v0.21.0
 )
 
 require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594 // indirect
-	github.com/fsnotify/fsnotify v1.5.4 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/fsnotify/fsnotify v1.8.0 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
-	github.com/magiconair/properties v1.8.6 // indirect
+	github.com/magiconair/properties v1.8.9 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
-	github.com/pelletier/go-toml v1.9.5 // indirect
-	github.com/pelletier/go-toml/v2 v2.0.5 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/spf13/afero v1.8.2 // indirect
-	github.com/spf13/cast v1.5.0 // indirect
-	github.com/spf13/jwalterweatherman v1.1.0 // indirect
-	github.com/subosito/gotenv v1.4.1 // indirect
-	golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
+	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/sagikazarmark/locafero v0.7.0 // indirect
+	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
+	github.com/spf13/afero v1.12.0 // indirect
+	github.com/spf13/cast v1.7.1 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	golang.org/x/exp v0.0.0-20250106191152-7588d65b2ba8 // indirect
+	golang.org/x/sys v0.29.0 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )