build(deps): bump github.com/labstack/echo/v4 from 4.5.0 to 4.6.1

Bumps [github.com/labstack/echo/v4](https://github.com/labstack/echo) from 4.5.0 to 4.6.1.
- [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...v4.6.1)

---
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/CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## v4.6.1 - 2021-09-26
+
+**Enhancements**
+
+* Add start time to request logger middleware values [#1991](https://github.com/labstack/echo/pull/1991)
+
 ## v4.6.0 - 2021-09-20
 
 Introduced a new [request logger](https://github.com/labstack/echo/blob/master/middleware/request_logger.go) middleware 

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

@@ -241,7 +241,7 @@ const (
 
 const (
 	// Version of Echo
-	Version = "4.6.0"
+	Version = "4.6.1"
 	website = "https://echo.labstack.com"
 	// http://patorjk.com/software/taag/#p=display&f=Small%20Slant&t=Echo
 	banner = `

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

@@ -124,6 +124,8 @@ type RequestLoggerConfig struct {
 
 // RequestLoggerValues contains extracted values from logger.
 type RequestLoggerValues struct {
+	// StartTime is time recorded before next middleware/handler is executed.
+	StartTime time.Time
 	// Latency is duration it took to execute rest of the handler chain (next(c) call).
 	Latency time.Duration
 	// Protocol is request protocol (i.e. `HTTP/1.1` or `HTTP/2`)
@@ -215,7 +217,9 @@ func (config RequestLoggerConfig) ToMiddleware() (echo.MiddlewareFunc, error) {
 			}
 			err := next(c)
 
-			v := RequestLoggerValues{}
+			v := RequestLoggerValues{
+				StartTime: start,
+			}
 			if config.LogLatency {
 				v.Latency = now().Sub(start)
 			}