CORE-599: Generate release notes on release from PRs (#4255)

#### What this PR does / why we need it:
From #4232 and
odigos-io/odigos-enterprise#2245, this updates
the release job to generate the release notes and update the github
release with those notes. Currently uses a fork of the k8s release-notes
tool to include the change from
kubernetes/release#4272

#### Changelog entry: Does this PR introduce a user-facing bug fix,
feature, dependency update, or breaking change??
<!--
This section will go in the release notes for this version. Is this
something users should be able to find easily?
If no, just write "NONE" in the release-note block below.
If yes, please add a release note in the block below describing this in
1-2 sentences for our changelog.
-->

```release-note
NONE
```

Author: damemi

.github/workflows/release.yml

@@ -62,7 +62,7 @@ jobs:
           tag: ${{ env.TAG }}
 
   build-cli:
-    needs: package-helm
+    needs: [package-helm]
     runs-on: depot-ubuntu-24.04-8
     steps:
       - name: Determine Tag Value
@@ -89,6 +89,11 @@ jobs:
             echo "This is a stable release: $TAG"
           fi
 
+          # Release branch for tag: v1.17.6 -> releases/v1.17.0
+          VERSION="${TAG#v}"
+          MAJOR_MINOR=$(echo "$VERSION" | cut -d. -f1,2)
+          echo "RELEASE_BRANCH=releases/v${MAJOR_MINOR}.0" >> $GITHUB_ENV
+
       - uses: actions/checkout@v5
         with:
           fetch-depth: 0
@@ -214,6 +219,22 @@ jobs:
           SKIP_HOMEBREW_UPDATE: ${{ env.SKIP_HOMEBREW_UPDATE }}
           GORELEASER_CURRENT_TAG: ${{ env.TAG }}
 
+      - name: Generate and update release notes
+        uses: odigos-io/ci-core/.github/actions/generate-release-notes@main
+        continue-on-error: true
+        with:
+          tag: ${{ env.TAG }}
+          release-branch: ${{ env.RELEASE_BRANCH }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Notify Slack (release notes)
+        uses: odigos-io/ci-core/.github/actions/slack-release-notification@main
+        with:
+          webhook-url: ${{ secrets.ODIGOS_RELEASE_STATUS_WEBHOOK_URL }}
+          success-description: "Release notes updated successfully"
+          failure-description: "ERROR: Failed to update release notes"
+          tag: ${{ env.TAG }}
+
       - uses: ko-build/setup-ko@v0.9
 
       - name: publish cli image to docker registries
@@ -257,7 +278,7 @@ jobs:
           tag: ${{ env.TAG }}
 
   publish-helm:
-    needs: build-cli
+    needs: [build-cli]
     runs-on: ubuntu-latest
     steps:
       - name: Determine Tag Value