Bump actions/first-interaction from 1 to 2

---
updated-dependencies:
- dependency-name: actions/first-interaction
  dependency-version: '2'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/greetings.yml

@@ -20,7 +20,7 @@ jobs:
 
       - name: Greet first-time contributors
         id: greet
-        uses: actions/first-interaction@v1
+        uses: actions/first-interaction@v2
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           issue-message: |