Implement workspace internal dependency updater

.github/actions/update-workspace-dependencies/action.yaml

@@ -0,0 +1,20 @@
+name: Update Workspace dependencies
+description: Updates internal dependencies in a Go Workspace
+
+inputs:
+  token:
+    description: Github token
+    required: true
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install dependencies
+      shell: bash
+      run: |
+          sudo DEBIAN_FRONTEND=noninteractive apt update
+          sudo DEBIAN_FRONTEND=noninteractive apt install -y jq
+    - name: Update workspace dependencies
+      shell: bash
+      run: ${{ github.action_path }}/update-workspace-dependencies.sh
+

.github/actions/update-workspace-dependencies/update-workspace-dependencies.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+set -eu
+
+repo="github.com/${GITHUB_ACTION_REPOSITORY}"
+
+# Gather all go modules
+modules=$(go work edit -json                                 \
+    | jq -r '.Use | keys[] as $k | "\(.[$k].DiskPath)"'     \
+    | sed $'s#\.\/##'                                       \
+)
+
+# Find internal dependencies
+for mod in ${modules} ; do
+    cd "${mod}"
+    echo "::group::Updating module ${mod}::"
+
+    url="${repo}/${mod}"
+    regex="s#${url} \(${repo}/[^@]\+\)@v.*#\1#p"
+    dependencies=`go mod graph | sed -n "${regex}"`
+
+    for dep in ${dependencies}; do
+        go get "${dep}@main"
+    done
+
+    go mod tidy
+
+    echo "Done"
+    echo "::endgroup::"
+    cd ~-
+done
+
+go work sync

.github/workflows/auto-updates.yaml

@@ -116,3 +116,33 @@ jobs:
         if: steps.check-readme.outputs.modified == 'true'
         run: |
           git push origin auto-updates/readme-cli-ref:main
+
+  update-internal-dependencies:
+    name: Update internal dependencies
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+        with:
+          ref: main
+      - name: Set up git
+        uses: ./.github/actions/setup-git
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Update submodules
+        uses: ./.github/actions/update-workspace-dependencies
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v5
+        with:
+          commit-message: Auto update internal dependencies
+          title: Auto update internal dependencies
+          labels: automated pr
+          body: "[Auto-generated pull request](https://github.com/canonical/ubuntu-pro-for-windows/actions/workflows/auto-updates.yaml) by GitHub Action"
+          branch: auto-updates/update-internal-dependencies
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Push branch
+        run: |
+          git push origin auto-updates/update-internal-dependencies:main
+        
+          
+