build: bump nginxproxy/forego from 0.17.3-debian to 0.18.1-debian

Bumps nginxproxy/forego from 0.17.3-debian to 0.18.1-debian.

---
updated-dependencies:
- dependency-name: nginxproxy/forego
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Dockerfile.alpine

@@ -1,6 +1,6 @@
 FROM nginxproxy/docker-gen:0.11.1 AS docker-gen
 
-FROM nginxproxy/forego:0.17.3 AS forego
+FROM nginxproxy/forego:0.18.1 AS forego
 
 # Build the final image
 FROM nginx:1.25.3-alpine

Dockerfile.debian

@@ -1,6 +1,6 @@
 FROM nginxproxy/docker-gen:0.11.1-debian AS docker-gen
 
-FROM nginxproxy/forego:0.17.3-debian AS forego
+FROM nginxproxy/forego:0.18.1-debian AS forego
 
 # Build the final image
 FROM nginx:1.25.3