docker: bump golang from 1.20.6-alpine3.18 to 1.20.7-alpine3.18 (#378)

Bumps golang from 1.20.6-alpine3.18 to 1.20.7-alpine3.18.

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

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

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.20.6-alpine3.18@sha256:7839c9f01b5502d7cb5198b2c032857023424470b3e31ae46a8261ffca72912a AS build
+FROM golang:1.20.7-alpine3.18@sha256:7efb78dac256c450d194e556e96f80936528335033a26d703ec8146cec8c2090 AS build
 
 COPY . /go/src/github.com/jauderho/bl3auto
 WORKDIR /go/src/github.com/jauderho/bl3auto