Bump pylint-dev/backport from 2.1.1 to 2.1.3 (#2951)

Bumps [pylint-dev/backport](https://github.com/pylint-dev/backport) from 2.1.1 to 2.1.3.
- [Release notes](https://github.com/pylint-dev/backport/releases)
- [Commits](https://github.com/pylint-dev/backport/compare/94367840595495e101f9a31415897c05da1f08d9...6accae9e09c5ad1bc3a0b56adf37c45357e7bcdc)

---
updated-dependencies:
- dependency-name: pylint-dev/backport
  dependency-version: 2.1.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/backport.yml

diff --git a/.github/workflows/backport.yml b/.github/workflows/backport.yml
index d627224..d81e593 100644
--- a/.github/workflows/backport.yml
+++ b/.github/workflows/backport.yml
@@ -33,7 +33,7 @@
           permission-contents: write # push branch to Github
           permission-pull-requests: write # create PR / add comment for manual backport
           permission-workflows: write # modify files in .github/workflows
-      - uses: pylint-dev/backport@94367840595495e101f9a31415897c05da1f08d9 # v2.1.1
+      - uses: pylint-dev/backport@6accae9e09c5ad1bc3a0b56adf37c45357e7bcdc # v2.1.3
         with:
           github_token: ${{ steps.app-token.outputs.token }}
           user_name: ${{ vars.BACKPORT_USER_NAME }}