[Vendor] Update urfave/cli v1.20.0 -> v1.22.2 (#84)

Merge branch 'master' into update-cli-lib2

[Vendor] Update stretchr/testify  v1.3.0 -> v1.4.0 (#83)

update github.com/stretchr/testify  v1.3.0 -> v1.4.0

Co-authored-by: 6543 <6543@obermui.de>
Reviewed-by: techknowlogick <techknowlogick@gitea.io>
Reviewed-by: sapk <sapk@noreply.gitea.io>
Reviewed-by: appleboy <appleboy.tw@gmail.com>

Update urfave/cli v1.20.0 -> v1.22.2

Co-authored-by: 6543 <6543@obermui.de>
Reviewed-by: mrsdizzie <info@mrsdizzie.com>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>

vendor/github.com/shurcooL/sanitized_anchor_name/main.go

@@ -0,0 +1,29 @@
+// Package sanitized_anchor_name provides a func to create sanitized anchor names.
+//
+// Its logic can be reused by multiple packages to create interoperable anchor names
+// and links to those anchors.
+//
+// At this time, it does not try to ensure that generated anchor names
+// are unique, that responsibility falls on the caller.
+package sanitized_anchor_name // import "github.com/shurcooL/sanitized_anchor_name"
+
+import "unicode"
+
+// Create returns a sanitized anchor name for the given text.
+func Create(text string) string {
+	var anchorName []rune
+	var futureDash = false
+	for _, r := range text {
+		switch {
+		case unicode.IsLetter(r) || unicode.IsNumber(r):
+			if futureDash && len(anchorName) > 0 {
+				anchorName = append(anchorName, '-')
+			}
+			futureDash = false
+			anchorName = append(anchorName, unicode.ToLower(r))
+		default:
+			futureDash = true
+		}
+	}
+	return string(anchorName)
+}