build(deps): bump github.com/labstack/echo-contrib in /backend

Bumps [github.com/labstack/echo-contrib](https://github.com/labstack/echo-contrib) from 0.14.1 to 0.15.0.
- [Release notes](https://github.com/labstack/echo-contrib/releases)
- [Commits](labstack/echo-contrib@v0.14.1...v0.15.0)

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

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

Author: dependabot[bot]

backend/go.mod

@@ -18,7 +18,7 @@ require (
 	github.com/kevinburke/go-bindata v3.22.0+incompatible
 	github.com/kinvolk/go-omaha v0.0.2-0.20221206142015-1518a03b832b
 	github.com/knadh/koanf v1.5.0
-	github.com/labstack/echo-contrib v0.14.1
+	github.com/labstack/echo-contrib v0.15.0
 	github.com/labstack/echo/v4 v4.10.2
 	github.com/labstack/gommon v0.4.2
 	github.com/lib/pq v1.10.7

backend/go.sum

@@ -593,8 +593,8 @@ github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/kyoh86/exportloopref v0.1.8 h1:5Ry/at+eFdkX9Vsdw3qU4YkvGtzuVfzT4X7S77LoN/M=
 github.com/kyoh86/exportloopref v0.1.8/go.mod h1:1tUcJeiioIs7VWe5gcOObrux3lb66+sBqGZrRkMwPgg=
-github.com/labstack/echo-contrib v0.14.1 h1:oNUSCeXQOlCGt3eWafzu0mkXjIh3SINnYgE/UR2kYXQ=
-github.com/labstack/echo-contrib v0.14.1/go.mod h1:6jgpHPjGRk0qrysPCfv3SCau6kewjQtYzOk1fLZGMeQ=
+github.com/labstack/echo-contrib v0.15.0 h1:9K+oRU265y4Mu9zpRDv3X+DGTqUALY6oRHCSZZKCRVU=
+github.com/labstack/echo-contrib v0.15.0/go.mod h1:lei+qt5CLB4oa7VHTE0yEfQSEB9XTJI1LUqko9UWvo4=
 github.com/labstack/echo/v4 v4.10.2 h1:n1jAhnq/elIFTHr1EYpiYtyKgx4RW9ccVgkqByZaN2M=
 github.com/labstack/echo/v4 v4.10.2/go.mod h1:OEyqf2//K1DFdE57vw2DRgWY0M7s65IVQO2FzvI4J5k=
 github.com/labstack/gommon v0.4.2 h1:F8qTUNXgG1+6WQmqoUWnz8WiEU60mXVVw0P4ht1WRA0=