👽 Updates create-pull-request version to fix env security vurnerability

This commit updates the create-pull-request action version such that a security vulnerability that is present when using
the `set-env` and `add-path` arguments is fixed. See
https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/
for more information.

.github/workflows/depup.yml

@@ -19,7 +19,7 @@ jobs:
           repo: reviewdog/reviewdog
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v2
+        uses: peter-evans/create-pull-request@v3
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           title: "chore(deps): update reviewdog to ${{ steps.depup.outputs.latest }}"
@@ -43,7 +43,7 @@ jobs:
           repo: redpen-cc/redpen
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v2
+        uses: peter-evans/create-pull-request@v3
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           title: "chore(deps): update redpen to ${{ steps.depup.outputs.latest }}"

README.md

@@ -77,7 +77,7 @@ jobs:
           repo: reviewdog/reviewdog
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v2
+        uses: peter-evans/create-pull-request@v3
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           title: "chore(deps): update reviewdog to ${{ steps.depup.outputs.latest }}"