Bump WyriHaximus/github-action-next-semvers from 1.1.0 to 1.2.1 (#377)

Bumps [WyriHaximus/github-action-next-semvers](https://github.com/wyrihaximus/github-action-next-semvers) from 1.1.0 to 1.2.1.
- [Release notes](https://github.com/wyrihaximus/github-action-next-semvers/releases)
- [Commits](WyriHaximus/github-action-next-semvers@33d116a...18aa9ed)

---
updated-dependencies:
- dependency-name: WyriHaximus/github-action-next-semvers
  dependency-version: 1.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/create-next-milestone.yaml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - name: Get next minor version
         id: semvers
-        uses: WyriHaximus/github-action-next-semvers@33d116a4c239252582a60a1ba8dbba63ad493ffd # 1.1.0
+        uses: WyriHaximus/github-action-next-semvers@18aa9ed4152808ab99b88d71f5481e41f8d89930 # 1.2.1
         with:
           version: ${{ github.event.milestone.title }}
       - name: Create next milestone

.github/workflows/increment-milestones-on-tag.yaml

@@ -53,7 +53,7 @@ jobs:
       - name: Get next minor version
         if: fromJSON(steps.milestone.outputs.result)
         id: semvers
-        uses: WyriHaximus/github-action-next-semvers@33d116a4c239252582a60a1ba8dbba63ad493ffd # 1.1.0
+        uses: WyriHaximus/github-action-next-semvers@18aa9ed4152808ab99b88d71f5481e41f8d89930 # 1.2.1
         with:
           version: ${{steps.milestoneTitle.outputs.result}}
       - name: Create next milestone