Bump github.com/urfave/cli/v2 from 2.27.5 to 2.27.6

Bumps [github.com/urfave/cli/v2](https://github.com/urfave/cli) from 2.27.5 to 2.27.6.
- [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/v2.27.5...v2.27.6)

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

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

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

@@ -150,8 +150,8 @@ func (f *StringSliceFlag) Apply(set *flag.FlagSet) error {
 		setValue = f.Value.clone()
 	default:
 		setValue = new(StringSlice)
-		setValue.WithSeparatorSpec(f.separator)
 	}
+	setValue.WithSeparatorSpec(f.separator)
 
 	setValue.keepSpace = f.KeepSpace
 

vendor/github.com/urfave/cli/v2/godoc-current.txt

@@ -136,7 +136,10 @@ var SubcommandHelpTemplate = `NAME:
    {{template "helpNameTemplate" .}}
 
 USAGE:
-   {{if .UsageText}}{{wrap .UsageText 3}}{{else}}{{.HelpName}} {{if .VisibleFlags}}command [command options]{{end}}{{if .ArgsUsage}} {{.ArgsUsage}}{{else}}{{if .Args}} [arguments...]{{end}}{{end}}{{end}}{{if .Description}}
+   {{template "usageTemplate" .}}{{if .Category}}
+
+CATEGORY:
+   {{.Category}}{{end}}{{if .Description}}
 
 DESCRIPTION:
    {{template "descriptionTemplate" .}}{{end}}{{if .VisibleCommands}}

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

@@ -54,7 +54,7 @@ var helpCommand = &Command{
 			cCtx = cCtx.parentContext
 		}
 
-		// Case 4. $ app hello foo
+		// Case 4. $ app help foo
 		// foo is the command for which help needs to be shown
 		if argsPresent {
 			return ShowCommandHelp(cCtx, firstArg)

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

@@ -83,7 +83,10 @@ var SubcommandHelpTemplate = `NAME:
    {{template "helpNameTemplate" .}}
 
 USAGE:
-   {{if .UsageText}}{{wrap .UsageText 3}}{{else}}{{.HelpName}} {{if .VisibleFlags}}command [command options]{{end}}{{if .ArgsUsage}} {{.ArgsUsage}}{{else}}{{if .Args}} [arguments...]{{end}}{{end}}{{end}}{{if .Description}}
+   {{template "usageTemplate" .}}{{if .Category}}
+
+CATEGORY:
+   {{.Category}}{{end}}{{if .Description}}
 
 DESCRIPTION:
    {{template "descriptionTemplate" .}}{{end}}{{if .VisibleCommands}}