Bump github.com/labstack/echo/v4 from 4.14.0 to 4.15.0 (#590)

Bumps [github.com/labstack/echo/v4](https://github.com/labstack/echo) from 4.14.0 to 4.15.0.
- [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/v4.14.0...v4.15.0)

---
updated-dependencies:
- dependency-name: github.com/labstack/echo/v4
  dependency-version: 4.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -17,7 +17,7 @@ require (
 	github.com/gorilla/securecookie v1.1.2
 	github.com/gorilla/sessions v1.4.0
 	github.com/labstack/echo-contrib v0.17.4
-	github.com/labstack/echo/v4 v4.14.0
+	github.com/labstack/echo/v4 v4.15.0
 	github.com/markbates/goth v1.82.0
 	github.com/meilisearch/meilisearch-go v0.35.0
 	github.com/pquerna/otp v1.5.0