chore(deps): Bump handlebars in /build/frontend-legacy

Bumps [handlebars](https://github.com/handlebars-lang/handlebars.js) from 4.7.8 to 4.7.9.
- [Release notes](https://github.com/handlebars-lang/handlebars.js/releases)
- [Changelog](https://github.com/handlebars-lang/handlebars.js/blob/v4.7.9/release-notes.md)
- [Commits](https://github.com/handlebars-lang/handlebars.js/compare/v4.7.8...v4.7.9)

---
updated-dependencies:
- dependency-name: handlebars
  dependency-version: 4.7.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build/frontend-legacy/package-lock.json

@@ -49,7 +49,7 @@
         "dompurify": "^3.3.3",
         "escape-html": "^1.0.3",
         "focus-trap": "^7.8.0",
-        "handlebars": "^4.7.8",
+        "handlebars": "^4.7.9",
         "is-svg": "^6.1.0",
         "jquery": "~3.7",
         "jquery-ui": "1.14.1",
@@ -10321,9 +10321,9 @@
       "peer": true
     },
     "node_modules/handlebars": {
-      "version": "4.7.8",
-      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.8.tgz",
-      "integrity": "sha512-vafaFqs8MZkRrSX7sFVUdo3ap/eNiLnb4IakshzvP56X5Nr1iGKAIqdX6tMlm6HcNRIkr6AxO5jFEoJzzpT8aQ==",
+      "version": "4.7.9",
+      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.9.tgz",
+      "integrity": "sha512-4E71E0rpOaQuJR2A3xDZ+GM1HyWYv1clR58tC8emQNeQe3RH7MAzSbat+V0wG78LQBo6m6bzSG/L4pBuCsgnUQ==",
       "license": "MIT",
       "dependencies": {
         "minimist": "^1.2.5",

build/frontend-legacy/package.json

@@ -65,7 +65,7 @@
     "dompurify": "^3.3.3",
     "escape-html": "^1.0.3",
     "focus-trap": "^7.8.0",
-    "handlebars": "^4.7.8",
+    "handlebars": "^4.7.9",
     "is-svg": "^6.1.0",
     "jquery": "~3.7",
     "jquery-ui": "1.14.1",