Add Dependabot goproxy-server private registry docs (#57407)

Co-authored-by: mc <42146119+mchammer01@users.noreply.github.com>

Author: alhss

content/code-security/dependabot/working-with-dependabot/configuring-access-to-private-registries-for-dependabot.md

@@ -165,6 +165,7 @@ Examples of how to configure access to the private registries supported by {% da
 * [`composer-repository`](#composer-repository)
 * [`docker-registry`](#docker-registry)
 * [`git`](#git)
+* [`goproxy-server`](#goproxy-server)
 * [`hex-organization`](#hex-organization)
 * [`hex-repository`](#hex-repository)
 * [`maven-repository`](#maven-repository)
@@ -257,6 +258,25 @@ registries:
 
 {% endraw %}
 
+### `goproxy-server`
+
+The `goproxy-server` type supports username and password. {% data reusables.dependabot.password-definition %}
+
+{% data reusables.dependabot.dependabot-updates-path-match %}
+
+{% raw %}
+
+```yaml copy
+registries:
+  my-private-registry:
+    type: goproxy-server
+    url: https://acme.jfrog.io/artifactory/api/go/my-repo
+    username: octocat
+    password: ${{secrets.MY_GO_REGISTRY_TOKEN}}
+```
+
+{% endraw %}
+
 {% ifversion dependabot-helm-support %}
 
 ### `helm-registry`

content/code-security/dependabot/working-with-dependabot/guidance-for-the-configuration-of-private-registries-for-dependabot.md

@@ -34,6 +34,7 @@ You'll find detailed guidance for the setup of the following package managers:
 * [Cargo](#cargo)
 * [Docker](#docker){% ifversion dependabot-docker-compose-support %}
 * [Docker Compose](#docker-compose){% endif %}
+* [Go](#go)
 * [Gradle](#gradle){% ifversion dependabot-helm-support %}
 * [Helm Charts](#helm-charts){% endif %}
 * [Maven](#maven)
@@ -238,6 +239,41 @@ updates:
 
 {% data reusables.dependabot.dependency-submission-api-build-time-dependencies %}
 
+### Go
+
+Supported by Jfrog Artifactory and Nexus.
+
+Go supports using a username and password for private registries.
+
+Configure your private registry using the `dependabot.yml` file with the `goproxy-server` type:
+
+{% raw %}
+
+```yaml copy
+registries:
+  my-private-registry:
+    type: goproxy-server
+    url: https://acme.jfrog.io/artifactory/api/go/my-repo
+    username: octocat
+    password: ${{secrets.MY_GO_REGISTRY_TOKEN}}
+```
+
+{% endraw %}
+
+You can also optionally configure how the Go toolchain accesses your proxy server by creating a `go.env` file in your repository root. This file allows you to set environment variables like `GOPROXY`, `GOPRIVATE`, `GONOSUMDB`, and `GOSUMDB` to control how Go modules are resolved:
+
+```text copy
+GOPROXY=https://acme.jfrog.io/artifactory/api/go/my-repo
+GOPRIVATE=my-company.com/*
+GONOSUMDB=my-company.com/*
+```
+
+#### Notes
+
+{% data reusables.dependabot.access-private-dependencies-link %}
+
+This feature enables unified dependency management for both public and private Go modules within a single {% data variables.product.prodname_dependabot %} workflow, making it ideal for organizations using corporate artifact management systems like JFrog Artifactory or Nexus.
+
 ### Maven
 
 Maven supports username and password authentication. For more information, see `maven-repository` in [AUTOTITLE](/code-security/dependabot/working-with-dependabot/configuring-access-to-private-registries-for-dependabot#maven-repository).