feat(ci): Add license workflow (#5465)

* add license workflow

* add api key

* update name of workflow

* add new line

* change workflow to run at midnight

* simplify task

.github/workflows/license.yml

@@ -0,0 +1,50 @@
+name: V2 Licenses
+
+on:
+  schedule:
+    # * is a special character in YAML so you have to quote this string
+    - cron: "0 0 * * *"
+  workflow_dispatch:
+
+jobs:
+  licenses:
+    runs-on: ubuntu-latest
+    if: github.repository == 'SeldonIO/seldon-core' # Do not run this on forks.
+    steps:
+      - name: Get github access token
+        run: |
+          echo ${{ secrets.GH_API_TOKEN }} > ~/.github_api_token
+      - uses: actions/checkout@v4
+      - name: Set up Python 3.10
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+      - name: Set up Go 1.20
+        uses: actions/setup-go@v4
+        with:
+            go-version: '1.20'
+            cache: false
+      - name: Install Dependencies
+        run: |
+            make install-go-license-tools
+      - name: Generate Licenses
+        run: |
+          make update-3rd-party-licenses
+          git --no-pager diff --name-only --exit-code
+      - name: Open PR with License Changes
+        if: ${{ failure() }}
+        uses: peter-evans/create-pull-request@v6
+        with:
+          commit-message: Re-generate license info
+          branch: licenses/license-change
+          branch-suffix: timestamp
+          delete-branch: true
+          title: Re-generate License Info
+          body: "
+            # License Change Detected :warning:\n
+            Most likely, this has been triggered due to a licensing change in
+            one of our subdependencies, or the introduction of a new
+            subdependency.
+            This automated PR will re-generate the licenses to keep them up to
+            date."
+          reviewers: sakoush, lc525