Update lukaszraczylo/semver-generator action to v1.15.7

Author: renovate[bot]

.github/workflows/ci.yml

@@ -83,7 +83,7 @@ jobs:
           fetch-depth: '0'
       - name: Semver run
         id: semver
-        uses: lukaszraczylo/semver-generator@1.4.18
+        uses: lukaszraczylo/semver-generator@1.15.7
         with:
           config_file: .github/semver.yaml
           repository_local: true