Automate draft PR for otel dependency updates (open-telemetry#2692)

Author: jeffreyc-splunk

.github/workflows/deps-test.yml

@@ -0,0 +1,47 @@
+name: Update OpenTelemetry Dependencies
+on:
+  pull_request:
+    paths:
+      - .github/workflows/update-deps.yml
+      - internal/buildscripts/update-deps
+  schedule:
+    - cron: '0 12 * * 1-5'
+
+env:
+  OTEL_VERSION: latest
+  GO_VERSION: 1.19.6
+
+concurrency:
+  group: update-deps-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  # Update OpenTelemetry dependencies to latest and create a draft PR if successful and there are changes.
+  update-deps:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v3
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - name: Caching dependency
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/go/bin
+            ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+      - name: Update OpenTelemetry Dependencies to ${{ env.OTEL_VERSION }}
+        run: OTEL_VERSION=${{ env.OTEL_VERSION }} ./internal/buildscripts/update-deps
+      - name: make tidy
+        run: make for-all CMD='make tidy'
+      - name: Create Pull Request
+        if: success() && (github.event_name == 'schedule')
+        uses: peter-evans/create-pull-request@v4
+        with:
+          title: Update OpenTelemetry Dependencies to ${{ env.OTEL_VERSION }}
+          commit-message: Update OpenTelemetry Dependencies to ${{ env.OTEL_VERSION }}
+          base: main
+          draft: true