build(deps): bump github.com/labstack/echo/v4 from 4.5.0 to 4.6.0

Bumps [github.com/labstack/echo/v4](https://github.com/labstack/echo) from 4.5.0 to 4.6.0.
- [Release notes](https://github.com/labstack/echo/releases)
- [Changelog](https://github.com/labstack/echo/blob/master/CHANGELOG.md)
- [Commits](https://github.com/labstack/echo/compare/v4.5.0...v4.6.0)

---
updated-dependencies:
- dependency-name: github.com/labstack/echo/v4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

vendor/github.com/labstack/echo/v4/echo.go

@@ -241,7 +241,7 @@ const (
 
 const (
 	// Version of Echo
-	Version = "4.5.0"
+	Version = "4.6.0"
 	website = "https://echo.labstack.com"
 	// http://patorjk.com/software/taag/#p=display&f=Small%20Slant&t=Echo
 	banner = `
@@ -357,7 +357,17 @@ func (e *Echo) Routers() map[string]*Router {
 
 // DefaultHTTPErrorHandler is the default HTTP error handler. It sends a JSON response
 // with status code.
+//
+// NOTE: In case errors happens in middleware call-chain that is returning from handler (which did not return an error).
+// When handler has already sent response (ala c.JSON()) and there is error in middleware that is returning from
+// handler. Then the error that global error handler received will be ignored because we have already "commited" the
+// response and status code header has been sent to the client.
 func (e *Echo) DefaultHTTPErrorHandler(err error, c Context) {
+
+	if c.Response().Committed {
+		return
+	}
+
 	he, ok := err.(*HTTPError)
 	if ok {
 		if he.Internal != nil {
@@ -384,15 +394,13 @@ func (e *Echo) DefaultHTTPErrorHandler(err error, c Context) {
 	}
 
 	// Send response
-	if !c.Response().Committed {
-		if c.Request().Method == http.MethodHead { // Issue #608
-			err = c.NoContent(he.Code)
-		} else {
-			err = c.JSON(code, message)
-		}
-		if err != nil {
-			e.Logger.Error(err)
-		}
+	if c.Request().Method == http.MethodHead { // Issue #608
+		err = c.NoContent(he.Code)
+	} else {
+		err = c.JSON(code, message)
+	}
+	if err != nil {
+		e.Logger.Error(err)
 	}
 }