*: `strings.Title` deprecation

Replace with simple manual construction of upper boolean
representation, as the (construction of the) `golang.org/x/text/cases`
replacement is way too complex for this use case.

Signed-off-by: Hidde Beydals <hidde@hhh.computer>

aes/cipher.go

@@ -11,11 +11,10 @@ import (
 	"fmt"
 	"regexp"
 	"strconv"
-	"strings"
 
-	"github.com/sirupsen/logrus"
 	"github.com/getsops/sops/v3"
 	"github.com/getsops/sops/v3/logging"
+	"github.com/sirupsen/logrus"
 )
 
 var log *logrus.Logger
@@ -172,7 +171,11 @@ func (c Cipher) Encrypt(plaintext interface{}, key []byte, additionalData string
 	case bool:
 		encryptedType = "bool"
 		// The Python version encodes booleans with Titlecase
-		plainBytes = []byte(strings.Title(strconv.FormatBool(value)))
+		if value {
+			plainBytes = []byte("True")
+		} else {
+			plainBytes = []byte("False")
+		}
 	case sops.Comment:
 		encryptedType = "comment"
 		plainBytes = []byte(value.Value)

sops.go

@@ -46,12 +46,12 @@ import (
 	"strings"
 	"time"
 
-	"github.com/sirupsen/logrus"
 	"github.com/getsops/sops/v3/audit"
 	"github.com/getsops/sops/v3/keys"
 	"github.com/getsops/sops/v3/keyservice"
 	"github.com/getsops/sops/v3/logging"
 	"github.com/getsops/sops/v3/shamir"
+	"github.com/sirupsen/logrus"
 	"golang.org/x/net/context"
 )
 
@@ -727,7 +727,11 @@ func ToBytes(in interface{}) ([]byte, error) {
 	case float64:
 		return []byte(strconv.FormatFloat(in, 'f', -1, 64)), nil
 	case bool:
-		return []byte(strings.Title(strconv.FormatBool(in))), nil
+		boolB := []byte("True")
+		if !in {
+			boolB = []byte("False")
+		}
+		return boolB, nil
 	case []byte:
 		return in, nil
 	case Comment: