update commit author + PR body

.github/workflows/dependency-updates.yml

@@ -1,4 +1,4 @@
-name: DependencyBot
+name: DependencyUpdater
 on: 
   workflow_dispatch:
   push:
@@ -8,14 +8,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3 # checkout branch that it is called from
-      - name: check for needed updates
-        run: make upgrade-e2e-solana-image
+      - name: check for solana image updates
+        id: solImage
+        run: |
+          make upgrade-e2e-solana-image
+          image=$(curl https://api.github.com/repos/solana-labs/solana/releases/latest | jq -r '.name')
+          echo "image=$image" >> "$GITHUB_OUTPUT"
       - name: Create pull request
         uses: peter-evans/create-pull-request@b1ddad2c994a25fbc81a28b3ec0e368bb2021c50 # v6.0.0
         with:
           title: "[automated] bump solana dependencies"
           branch: bump/dependencies
           branch-suffix: timestamp
+          author: "github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>"
           reviewers: aalu1418
           commit-message: "[automated] bump solana dependencies"
+          body: "Latest Solana mainnet release is [\"${{ steps.solImage.outputs.image }}\"](https://github.com/solana-labs/solana/releases/latest)"