Bump RocketSurgeonsGuild/actions from 0.2.4 to 0.3.15

Bumps [RocketSurgeonsGuild/actions](https://github.com/rocketsurgeonsguild/actions) from 0.2.4 to 0.3.15.
- [Release notes](https://github.com/rocketsurgeonsguild/actions/releases)
- [Commits](RocketSurgeonsGuild/actions@v0.2.4...v0.3.15)

---
updated-dependencies:
- dependency-name: RocketSurgeonsGuild/actions
  dependency-version: 0.3.15
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/close-milestone.yml

@@ -37,7 +37,7 @@ jobs:
 
       # move any issues to that milestone in the event the release is renamed
       - name: sync milestones
-        uses: RocketSurgeonsGuild/actions/sync-milestone@v0.2.4
+        uses: RocketSurgeonsGuild/actions/sync-milestone@v0.3.15
         with:
           default-label: ':sparkles: mysterious'
           github-token: ${{ secrets.RSG_BOT_TOKEN }}

.github/workflows/draft-release.yml

@@ -48,7 +48,7 @@ jobs:
           echo "::set-output name=repository::$($parts[1])"
 
       - name: sync milestones
-        uses: RocketSurgeonsGuild/actions/sync-milestone@v0.2.4
+        uses: RocketSurgeonsGuild/actions/sync-milestone@v0.3.15
         with:
           default-label: ':sparkles: mysterious'
           github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/sync-labels.yml

@@ -23,7 +23,7 @@ jobs:
           path: .rsg
 
       - name: merge files
-        uses: RocketSurgeonsGuild/actions/merge-labels@v0.2.4
+        uses: RocketSurgeonsGuild/actions/merge-labels@v0.3.15
         with:
           files: '.rsg/.github/labels.yml,.github/labels.yml'
           output: .github/labels.yml

.github/workflows/update-milestone.yml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v2.3.4
 
       - name: sync milestones
-        uses: RocketSurgeonsGuild/actions/sync-milestone@v0.2.4
+        uses: RocketSurgeonsGuild/actions/sync-milestone@v0.3.15
         with:
           default-label: ':sparkles: mysterious'
           github-token: ${{ secrets.GITHUB_TOKEN }}