build(deps): bump github.com/spf13/viper from 1.12.0 to 1.20.0

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.12.0 to 1.20.0.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](spf13/viper@v1.12.0...v1.20.0)

---
updated-dependencies:
- dependency-name: github.com/spf13/viper
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

go.mod

@@ -2,6 +2,8 @@ module github.com/golangci/golangci-lint/v2
 
 go 1.23.0
 
+toolchain go1.24.1
+
 require (
 	4d63.com/gocheckcompilerdirectives v1.3.0
 	4d63.com/gochecknoglobals v0.2.2
@@ -103,7 +105,7 @@ require (
 	github.com/sourcegraph/go-diff v0.7.0
 	github.com/spf13/cobra v1.9.1
 	github.com/spf13/pflag v1.0.6
-	github.com/spf13/viper v1.12.0
+	github.com/spf13/viper v1.20.0
 	github.com/ssgreg/nlreturn/v2 v2.2.1
 	github.com/stbenjam/no-sprintf-host-port v0.2.0
 	github.com/stretchr/testify v1.10.0
@@ -148,7 +150,7 @@ require (
 	github.com/ebitengine/purego v0.8.2 // indirect
 	github.com/ettle/strcase v0.2.0 // indirect
 	github.com/fatih/structtag v1.2.0 // indirect
-	github.com/fsnotify/fsnotify v1.5.4 // indirect
+	github.com/fsnotify/fsnotify v1.8.0 // indirect
 	github.com/go-ole/go-ole v1.2.6 // indirect
 	github.com/go-toolsmith/astcast v1.1.0 // indirect
 	github.com/go-toolsmith/astcopy v1.1.0 // indirect
@@ -164,19 +166,15 @@ require (
 	github.com/gostaticanalysis/comment v1.5.0 // indirect
 	github.com/hashicorp/go-immutable-radix/v2 v2.1.0 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
-	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/hexops/gotextdiff v1.0.3 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect
-	github.com/magiconair/properties v1.8.6 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-runewidth v0.0.16 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
-	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/muesli/termenv v0.15.2 // indirect
 	github.com/olekukonko/tablewriter v0.0.5 // indirect
-	github.com/pelletier/go-toml v1.9.5 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
 	github.com/prometheus/client_golang v1.12.1 // indirect
@@ -188,23 +186,23 @@ require (
 	github.com/quasilyte/regex/syntax v0.0.0-20210819130434-b3f0c404a727 // indirect
 	github.com/quasilyte/stdinfo v0.0.0-20220114132959-f7386bf02567 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/sagikazarmark/locafero v0.7.0 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
 	github.com/spf13/afero v1.12.0 // indirect
-	github.com/spf13/cast v1.5.0 // indirect
-	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/spf13/cast v1.7.1 // indirect
 	github.com/stretchr/objx v0.5.2 // indirect
-	github.com/subosito/gotenv v1.4.1 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
 	github.com/tklauser/go-sysconf v0.3.12 // indirect
 	github.com/tklauser/numcpus v0.6.1 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
-	go.uber.org/atomic v1.7.0 // indirect
-	go.uber.org/multierr v1.6.0 // indirect
+	go.uber.org/atomic v1.9.0 // indirect
+	go.uber.org/multierr v1.9.0 // indirect
 	go.uber.org/zap v1.24.0 // indirect
 	golang.org/x/exp v0.0.0-20240909161429-701f63a606c0 // indirect
 	golang.org/x/exp/typeparams v0.0.0-20250210185358-939b2ce775ac // indirect
 	golang.org/x/sync v0.12.0 // indirect
 	golang.org/x/text v0.22.0 // indirect
 	google.golang.org/protobuf v1.36.5 // indirect
-	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )