Update .github/workflows/accessibility-alt-text-bot.yml

Co-authored-by: Clay Miller <clay@smockle.com>

Author: dgreif

.github/workflows/accessibility-alt-text-bot.yml

@@ -23,4 +23,4 @@ jobs:
     if: ${{ github.event.issue || github.event.pull_request || github.event.discussion }}
     steps:
       - name: Get action 'github/accessibility-alt-text-bot'
-        uses: github/accessibility-alt-text-bot@7e895d46677f15841def9acef1239ea7c12593a5
+        uses: github/accessibility-alt-text-bot@7e895d46677f15841def9acef1239ea7c12593a5 # v1.7.3