Update vendor

vendor/github.com/jedib0t/go-pretty/table/util.go

@@ -0,0 +1,27 @@
+package table
+
+import "reflect"
+
+// AutoIndexColumnID returns a unique Column ID/Name for the given Column Number.
+// The functionality is similar to what you get in an Excel spreadsheet w.r.t.
+// the Column ID/Name.
+func AutoIndexColumnID(colIdx int) string {
+	charIdx := colIdx % 26
+	out := string(65 + charIdx)
+	colIdx = colIdx / 26
+	if colIdx > 0 {
+		return AutoIndexColumnID(colIdx-1) + out
+	}
+	return out
+}
+
+// isNumber returns true if the argument is a numeric type; false otherwise.
+func isNumber(x interface{}) bool {
+	switch reflect.TypeOf(x).Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
+		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
+		reflect.Float32, reflect.Float64:
+		return true
+	}
+	return false
+}