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/go.mod

@@ -6,11 +6,12 @@ require (
 	github.com/golang-jwt/jwt v3.2.2+incompatible
 	github.com/labstack/gommon v0.3.0
 	github.com/mattn/go-colorable v0.1.8 // indirect
+	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/stretchr/testify v1.4.0
 	github.com/valyala/fasttemplate v1.2.1
-	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2
-	golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4
-	golang.org/x/sys v0.0.0-20210403161142-5e06dd20ab57 // indirect
-	golang.org/x/text v0.3.6 // indirect
+	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5
+	golang.org/x/net v0.0.0-20210913180222-943fd674d43e
+	golang.org/x/sys v0.0.0-20210910150752-751e447fb3d0 // indirect
+	golang.org/x/text v0.3.7 // indirect
 	golang.org/x/time v0.0.0-20201208040808-7e3f01d25324
 )