build: bump nginxproxy/docker-gen from 0.12.0-debian to 0.12.1-debian

Bumps nginxproxy/docker-gen from 0.12.0-debian to 0.12.1-debian.

---
updated-dependencies:
- dependency-name: nginxproxy/docker-gen
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Dockerfile.alpine

@@ -1,4 +1,4 @@
-FROM nginxproxy/docker-gen:0.12.0 AS docker-gen
+FROM nginxproxy/docker-gen:0.12.1 AS docker-gen
 
 FROM nginxproxy/forego:0.18.1 AS forego
 

Dockerfile.debian

@@ -1,4 +1,4 @@
-FROM nginxproxy/docker-gen:0.12.0-debian AS docker-gen
+FROM nginxproxy/docker-gen:0.12.1-debian AS docker-gen
 
 FROM nginxproxy/forego:0.18.1-debian AS forego