Add fossa and mend with workflow_dispatch only (#1523)

### Proposed changes

Add fossa and mend with workflow_dispatch only

### Checklist

Before creating a PR, run through this checklist and mark each step as
complete.

- [x] I have read the
[`CONTRIBUTING`](https://github.com/nginxinc/docs/blob/main/CONTRIBUTING.md)
document
- [x] I have viewed my changes in the documentation Deploy Preview
- [x] My PR is targeting the correct branch:
  - main: content that can be released immediately
- product release branch: content that should be held for a future
release
- [x] I have updated any relevant supporting documentation
([`README.md`](https://github.com/nginxinc/docs/blob/main/README.md) and
the
[`CHANGELOG.md`](https://github.com/nginxinc/docs/blob/main/CHANGELOG.md))
- [x] I have followed the [conventional commits
guidelines](https://www.conventionalcommits.org/en/v1.0.0/#summary) for
all commits on my branch

When you're ready to merge a PR, run through this checklist and mark
each step as complete.

- [x] Review the doc for spelling errors.
- [x] Verify that all links in the doc work.
- [x] Verify that the doc follows the appropriate content template.
- [x] Add technical and docs reviewers. Refer to the appropriate
CODEOWNERS file, which includes authorized teams of reviewers.
- [x] Share the PR for review in the
[`#nginx-doc-reviews`](https://f5.enterprise.slack.com/archives/C04PYFULN91)
channel in Slack.

Author: nginx-jack

.github/workflows/fossa.yml

@@ -0,0 +1,30 @@
+name: Fossa
+
+on:
+    workflow_dispatch:
+        inputs:
+          branch:
+            type: string
+            required: false
+            default: main
+
+concurrency:
+  group: ${{ github.ref_name }}-fossa
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  scan:
+    name: Fossa
+    runs-on: ubuntu-24.04
+    if: ${{ github.event.repository.fork == false }}
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: Scan
+        uses: fossas/fossa-action@09bcf127dc0ccb4b5a023f6f906728878e8610ba # v1.4.0
+        with:
+          api-key: ${{ secrets.FOSSA_TOKEN }}

.github/workflows/mend.yml

@@ -0,0 +1,38 @@
+name: Mend
+
+on:
+  workflow_dispatch:
+    inputs:
+      branch:
+        type: string
+        required: false
+        default: main
+
+concurrency:
+  group: ${{ github.ref_name }}-mend
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  scan:
+    name: Mend
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          ref: ${{ inputs.branch && inputs.branch || github.ref }}
+
+      - name: Download agent
+        run: curl -fsSLJO https://github.com/whitesource/unified-agent-distribution/releases/latest/download/wss-unified-agent.jar
+
+      - name: Verify JAR
+        run: jarsigner -verify wss-unified-agent.jar
+
+      - name: Scan and upload
+        env:
+          PRODUCT_NAME: nginx_documentation_${{ inputs.branch && inputs.branch || github.ref_name }}
+          PROJECT_NAME: nic
+        run: java -jar wss-unified-agent.jar -noConfig true -wss.url ${{ secrets.WSS_URL }} -apiKey ${{ secrets.WSS_NGINX_TOKEN }} -product $PRODUCT_NAME -project $PROJECT_NAME -d .