Bump immutable from 4.3.7 to 4.3.8

Bumps [immutable](https://github.com/immutable-js/immutable-js) from 4.3.7 to 4.3.8.
- [Release notes](https://github.com/immutable-js/immutable-js/releases)
- [Changelog](https://github.com/immutable-js/immutable-js/blob/main/CHANGELOG.md)
- [Commits](https://github.com/immutable-js/immutable-js/compare/v4.3.7...v4.3.8)

---
updated-dependencies:
- dependency-name: immutable
  dependency-version: 4.3.8
  dependency-type: indirect
...

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

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "mana-font",
-  "version": "1.16.0",
+  "version": "1.18.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "mana-font",
-      "version": "1.16.0",
+      "version": "1.18.0",
       "license": "MIT",
       "devDependencies": {
         "sass": "^1.80.4"
@@ -354,9 +354,9 @@
       }
     },
     "node_modules/immutable": {
-      "version": "4.3.7",
-      "resolved": "https://registry.npmjs.org/immutable/-/immutable-4.3.7.tgz",
-      "integrity": "sha512-1hqclzwYwjRDFLjcFxOM5AYkkG0rpFPpr1RLPMEuGczoS7YA8gLhy8SWXYRAA/XwfEHpfo3cw5JGioS32fnMRw==",
+      "version": "4.3.8",
+      "resolved": "https://registry.npmjs.org/immutable/-/immutable-4.3.8.tgz",
+      "integrity": "sha512-d/Ld9aLbKpNwyl0KiM2CT1WYvkitQ1TSvmRtkcV8FKStiDoA7Slzgjmb/1G2yhKM1p0XeNOieaTbFZmU1d3Xuw==",
       "dev": true,
       "license": "MIT"
     },