Fix linter failures

github/github.go

@@ -20,10 +20,10 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"net/url"
+	"os"
 
 	"github.com/ossf/scorecard/v4/clients/githubrepo/roundtripper"
 	sclog "github.com/ossf/scorecard/v4/log"
@@ -123,7 +123,7 @@ func (c *Client) ParseFromFile(filepath string) (RepoInfo, error) {
 	var ret RepoInfo
 
 	log.Printf("getting repo info from file: %s", filepath)
-	repoInfo, err := ioutil.ReadFile(filepath)
+	repoInfo, err := os.ReadFile(filepath)
 	if err != nil {
 		return ret, fmt.Errorf("reading GitHub event path: %w", err)
 	}

install/install.go

@@ -19,8 +19,8 @@ package install
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
 	"log"
+	"os"
 
 	"github.com/google/go-github/v42/github"
 
@@ -42,8 +42,11 @@ var workflowFiles = []string{
 // organization.
 // TODO(install): Improve description.
 // TODO(install): Accept a context instead of setting one.
-//nolint:gocognit
 // TODO(lint): cognitive complexity 31 of func `Run` is high (> 30) (gocognit).
+//
+// TODO(lint): cognitive complexity 31 of func `Run` is high (> 30) (gocognit).
+//
+//nolint:gocognit
 func Run(o *options.Options) error {
 	err := o.Validate()
 	if err != nil {
@@ -69,7 +72,7 @@ func Run(o *options.Options) error {
 	}
 
 	// Get yml file into byte array.
-	workflowContent, err := ioutil.ReadFile(o.ConfigPath)
+	workflowContent, err := os.ReadFile(o.ConfigPath)
 	if err != nil {
 		return fmt.Errorf("reading scorecard workflow file: %w", err)
 	}

signing/signing.go

@@ -22,7 +22,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 	"os"
@@ -78,7 +77,7 @@ func GetJSONScorecardResults() ([]byte, error) {
 	}
 
 	// Get json output data from file.
-	jsonPayload, err := ioutil.ReadFile(os.Getenv(options.EnvInputResultsFile))
+	jsonPayload, err := os.ReadFile(os.Getenv(options.EnvInputResultsFile))
 	if err != nil {
 		return nil, fmt.Errorf("reading scorecard json results from file: %w", err)
 	}

signing/signing_test.go

@@ -17,7 +17,7 @@
 package signing
 
 import (
-	"io/ioutil"
+	"os"
 	"testing"
 )
 
@@ -76,7 +76,7 @@ import (
 func Test_ProcessSignature(t *testing.T) {
 	t.Parallel()
 
-	jsonPayload, err := ioutil.ReadFile("testdata/results.json")
+	jsonPayload, err := os.ReadFile("testdata/results.json")
 	repoName := "ossf-tests/scorecard-action"
 	repoRef := "refs/heads/main"
 	accessToken := ""