build(deps): bump github.com/sergi/go-diff from 1.1.0 to 1.3.1 (#6473)

Bumps [github.com/sergi/go-diff](https://github.com/sergi/go-diff) from 1.1.0 to 1.3.1.
- [Commits](https://github.com/sergi/go-diff/compare/v1.1.0...v1.3.1)

---
updated-dependencies:
- dependency-name: github.com/sergi/go-diff
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

vendor/github.com/sergi/go-diff/diffmatchpatch/stringutil.go

@@ -9,6 +9,7 @@
 package diffmatchpatch
 
 import (
+	"strconv"
 	"strings"
 	"unicode/utf8"
 )
@@ -86,3 +87,20 @@ func runesIndex(r1, r2 []rune) int {
 	}
 	return -1
 }
+
+func intArrayToString(ns []uint32) string {
+	if len(ns) == 0 {
+		return ""
+	}
+
+	indexSeparator := IndexSeparator[0]
+
+	// Appr. 3 chars per num plus the comma.
+	b := []byte{}
+	for _, n := range ns {
+		b = strconv.AppendInt(b, int64(n), 10)
+		b = append(b, indexSeparator)
+	}
+	b = b[:len(b)-1]
+	return string(b)
+}