Update dependencies, removed deprecated package usage

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.14.0 as build
+FROM golang:1.22 as build
 
 COPY . /src
 RUN set -ex \

dbconnector/tls.go

@@ -5,7 +5,7 @@ import (
 	"crypto/x509"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"os"
 )
 
 // PrepareTLSConfig creates tls.Config with certificate files
@@ -26,7 +26,7 @@ func PrepareTLSConfig(caFile, certFile, keyFile string) (*tls.Config, error) {
 	}
 
 	if len(caFile) != 0 {
-		ca, err := ioutil.ReadFile(caFile)
+		ca, err := os.ReadFile(caFile)
 		if err != nil {
 			return nil, fmt.Errorf("TLS CA file load error: %v", err)
 		}

go.mod

@@ -1,16 +1,53 @@
 module github.com/rethinkdb/prometheus-exporter
 
-go 1.13
+go 1.22.0
+
+toolchain go1.22.11
+
+require (
+	github.com/prometheus/client_golang v1.20.5
+	github.com/prometheus/common v0.62.0
+	github.com/rs/zerolog v1.33.0
+	github.com/spf13/cobra v1.8.1
+	github.com/spf13/viper v1.19.0
+	golang.org/x/sync v0.11.0
+	gopkg.in/rethinkdb/rethinkdb-go.v6 v6.2.2
+)
 
 require (
-	github.com/bitly/go-hostpool v0.1.0 // indirect
-	github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 // indirect
-	github.com/prometheus/client_golang v0.9.3
-	github.com/prometheus/common v0.4.0
-	github.com/rs/zerolog v1.18.0
-	github.com/spf13/cobra v0.0.6
-	github.com/spf13/viper v1.6.2
-	golang.org/x/sync v0.0.0-20190423024810-112230192c58
-	golang.org/x/tools v0.0.0-20200221224223-e1da425f72fd // indirect
-	gopkg.in/rethinkdb/rethinkdb-go.v6 v6.0.0
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/fsnotify/fsnotify v1.8.0 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/klauspost/compress v1.17.11 // indirect
+	github.com/magiconair/properties v1.8.9 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/opentracing/opentracing-go v1.2.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
+	github.com/prometheus/client_model v0.6.1 // indirect
+	github.com/prometheus/procfs v0.15.1 // indirect
+	github.com/sagikazarmark/locafero v0.7.0 // indirect
+	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
+	github.com/sirupsen/logrus v1.9.3 // 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/spf13/pflag v1.0.6 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	golang.org/x/crypto v0.32.0 // indirect
+	golang.org/x/exp v0.0.0-20250128182459-e0ece0dbea4c // indirect
+	golang.org/x/net v0.34.0 // indirect
+	golang.org/x/sys v0.30.0 // indirect
+	golang.org/x/text v0.22.0 // indirect
+	google.golang.org/protobuf v1.36.4 // indirect
+	gopkg.in/cenkalti/backoff.v2 v2.2.1 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )