build(deps): bump devmasx/merge-branch from 1.3.1 to 1.4.0

Bumps [devmasx/merge-branch](https://github.com/devmasx/merge-branch) from 1.3.1 to 1.4.0.
- [Release notes](https://github.com/devmasx/merge-branch/releases)
- [Changelog](https://github.com/devmasx/merge-branch/blob/master/CHANGELOG.md)
- [Commits](https://github.com/devmasx/merge-branch/compare/v1.3.1...1.4.0)

---
updated-dependencies:
- dependency-name: devmasx/merge-branch
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/periodic-merge-24h.yml

@@ -33,7 +33,7 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: ${{ matrix.pairs.from }} → ${{ matrix.pairs.into }}
-        uses: devmasx/merge-branch@v1.3.1
+        uses: devmasx/merge-branch@1.4.0
         with:
           type: now
           from_branch: ${{ matrix.pairs.from }}

.github/workflows/periodic-merge-6h.yml

@@ -39,7 +39,7 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: ${{ matrix.pairs.from }} → ${{ matrix.pairs.into }}
-        uses: devmasx/merge-branch@v1.3.1
+        uses: devmasx/merge-branch@1.4.0
         with:
           type: now
           from_branch: ${{ matrix.pairs.from }}