[collector] (deps): Bump golang in /services/collector

Bumps golang from 1.20.3 to 1.20.5.

---
updated-dependencies:
- dependency-name: golang
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

services/collector/Dockerfile

@@ -1,7 +1,7 @@
 # Use the official Golang image to create a build artifact.
 # This is based on Debian and sets the GOPATH to /go.
 # https://hub.docker.com/_/golang
-FROM golang:1.20.3 as builder
+FROM golang:1.20.5 as builder
 
 # Create and change to the app directory.
 WORKDIR /app