feat(.github/actions): add get-version-number-and-issue-url action

.github/actions/get-version-number-and-issue-url-v1/README.md

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+# get-version-number-and-issue-url-v1
+
+This action gets the version number and issue url from the release-candidate.
+
+## Outputs
+
+| Output           | Description                                                 |
+| ---------------- | ----------------------------------------------------------- |
+| `version-number` | The version number of the release candidate.                |
+| `issue-url`      | The url of the issue associated with the release candidate. |
+
+## Example usage
+
+```yaml
+name: Get version number and issue url and post to Slack
+
+on: push
+
+jobs:
+  post-to-slack:
+    runs-on: ubuntu-latest
+    steps:
+      - name: get version number and release-candidate issue URL
+      - uses: dequelabs/axe-api-team-public/.github/actions/get-version-number-and-issue-url-v1@main
+        id: get-version-number-and-issue-url
+
+      - name: Slack Notification
+      # https://github.com/rtCamp/action-slack-notify/commit/b24d75fe0e728a4bf9fc42ee217caa686d141ee8
+      uses: rtCamp/action-slack-notify@12e36fc18b0689399306c2e0b3e0f2978b7f1ee7
+      env:
+        SLACK_CHANNEL: example-channel
+        SLACK_COLOR: ${{ job.status }}
+        SLACK_TITLE: '${{ github.event.repository.name }} v${{ steps.get-version-number-and-issue-url.outputs.version-number }} QA NEEDED'
+        SLACK_MESSAGE: '${{ steps.get-version-number-and-issue-url.outputs.issue-url }}'
+        SLACK_WEBHOOK: ${{ inputs.slack-webhook }}
+        MSG_MINIMAL: true
+```

.github/actions/get-version-number-and-issue-url-v1/action.yml

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+name: get-version-number-and-issue-url
+description: 'A small GitHub Action to get the version number and issue URL for a release candidate'
+
+outputs:
+  version-number:
+    description: 'The version number for the release candidate'
+    value: ${{ steps.get_version_number.outputs.version-number }}
+  issue-url:
+    description: 'The issue URL for the release candidate'
+    value: ${{ steps.get_issue_url.outputs.issue-url }}
+
+runs:
+  using: 'composite'
+  steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+      with:
+        # Fetch all history
+        fetch-depth: 0
+
+    - name: Get release-candidate issue URL
+      id: get_issue_url
+      shell: bash
+      run: |
+        echo "issue-url=$(gh issue list --repo ${{ github.repository }} --label release --state open --json url --jq '.[0].url')" >> $GITHUB_OUTPUT
+
+    - name: Get release-candidate version number
+      id: get_version_number
+      shell: bash
+      run: |
+        pullRequestID=$(gh pr list --repo ${{ github.repository }} --json number -s merged --base release --jq '.[0].number')
+
+        # Get the version number from the pull request title e.g. 1.33.7
+        echo "version-number=$(gh pr view $pullRequestID --repo ${{ github.repository }} --json title --jq '.title' | grep grep -E -o '\d+.\d+.\d+' | awk '{print $NF}')" >> $GITHUB_OUTPUT