build(deps): bump github.com/urfave/cli/v2 from 2.25.7 to 2.26.0

Bumps [github.com/urfave/cli/v2](https://github.com/urfave/cli) from 2.25.7 to 2.26.0.
- [Release notes](https://github.com/urfave/cli/releases)
- [Changelog](https://github.com/urfave/cli/blob/main/docs/CHANGELOG.md)
- [Commits](https://github.com/urfave/cli/compare/v2.25.7...v2.26.0)

---
updated-dependencies:
- dependency-name: github.com/urfave/cli/v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/urfave/cli/v2/command.go

@@ -149,6 +149,9 @@ func (c *Command) Run(cCtx *Context, arguments ...string) (err error) {
 
 	if !c.isRoot {
 		c.setup(cCtx)
+		if err := checkDuplicatedCmds(c); err != nil {
+			return err
+		}
 	}
 
 	a := args(arguments)
@@ -404,3 +407,16 @@ func hasCommand(commands []*Command, command *Command) bool {
 
 	return false
 }
+
+func checkDuplicatedCmds(parent *Command) error {
+	seen := make(map[string]struct{})
+	for _, c := range parent.Subcommands {
+		for _, name := range c.Names() {
+			if _, exists := seen[name]; exists {
+				return fmt.Errorf("parent command [%s] has duplicated subcommand name or alias: %s", parent.Name, name)
+			}
+			seen[name] = struct{}{}
+		}
+	}
+	return nil
+}