fix(deps): pin dependencies (#79)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

personalization-webcomponents/package-lock.json

@@ -20,8 +20,8 @@
     "@muenchen/muc-patternlab-vue": "5.6.0",
     "@vueuse/core": "13.6.0",
     "vue": "3.5.18",
-    "sortablejs": "^1.15.6",
-    "sortablejs-vue3": "^1.3.0"
+    "sortablejs": "1.15.6",
+    "sortablejs-vue3": "1.3.0"
   },
   "devDependencies": {
     "@cyclonedx/cyclonedx-npm": "4.0.0",