Remove Depandabot Auto Merges and any CircleCI References

1. We have multiple implementation of Dependabot, one of them did not
run for months, and the default one keeps failing. Also, Circle CI
is still being referenced for some reason in the Dependabot flow.

2. Rely of the PRs created by Depandabot, and will will do manual PR
reviews and merges for now.

3. When all of the CI is consolidated to Github Actions, we can
bring automatic Depandabot merges, in a cleaner way.

4. Remove any CircleCI References

Linear Issue: https://linear.app/expanso/issue/ENG-297/fix-dependabot-integration
Github Issue: #4656

.github/dependabot.yml

@@ -1,18 +1,25 @@
 version: 2
 updates:
-- package-ecosystem: "gomod"
-  directory: "/"
-  schedule:
-    interval: daily
-  labels:
-    - "lang/go"
-    - "th/dependencies"
-  open-pull-requests-limit: 1
-- package-ecosystem: "pip"
-  directory: "/integration/"
-  schedule:
-    interval: daily
-  labels:
-    - "lang/python"
-    - "th/dependencies"
-  open-pull-requests-limit: 1
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    labels:
+      - "lang/go"
+      - "dependabot/version-updates"
+    open-pull-requests-limit: 1
+  - package-ecosystem: "pip"
+    directory: "/integration/"
+    schedule:
+      interval: "daily"
+    labels:
+      - "lang/python"
+      - "dependabot/version-updates"
+    open-pull-requests-limit: 1
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    labels:
+      - "lang/github-actions"
+      - "dependabot/version-updates"

.github/workflows/testcontainers-integration-tests.yml

@@ -13,23 +13,12 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
-      # Detect Go version from test_integration/go.mod
-      - name: Detect Go version from test_integration/go.mod
-        id: detect-test-go-version
-        shell: bash
-        run: |
-          set -euo pipefail
-          go_version=$(grep '^go ' test_integration/go.mod | awk '{print $2}')
-          echo "Go version detected for integration tests: $go_version"
-          echo "GOLANG_TEST_VERSION=$go_version" >> $GITHUB_ENV
-
-      - name: Set up Go
+      - name: Install Golang
         uses: actions/setup-go@v5
         with:
-          go-version: ${{ env.GOLANG_TEST_VERSION }}
-          cache: true
+          go-version-file: go.work
 
       - name: Run Go tests in integration test directory
         shell: bash