chore(deps): bump lodash from 4.17.21 to 4.18.1 in /functions

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.21 to 4.18.1.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.21...4.18.1)

---
updated-dependencies:
- dependency-name: lodash
  dependency-version: 4.18.1
  dependency-type: indirect
...

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

functions/package-lock.json

@@ -1556,9 +1556,9 @@
       "integrity": "sha512-FWWMIEOxz3GwUI4Ts/IvgVy6LPvoMPgjMdQ185nN6psJyBJ4yOpzqm695/h5umdLJg2vW3GR5iG11MAkR2AzJA=="
     },
     "node_modules/lodash": {
-      "version": "4.17.21",
+      "version": "4.18.1",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.18.1.tgz",
-      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+      "integrity": "sha512-dMInicTPVE8d1e5otfwmmjlxkZoUpiVLwyeTdUsi/Caj/gfzzblBcCE5sRHV/AsjuCmxWrte2TNGSYuCeCq+0Q=="
     },
     "node_modules/lodash.camelcase": {
       "version": "4.3.0",
@@ -3621,9 +3621,9 @@
       "integrity": "sha512-FWWMIEOxz3GwUI4Ts/IvgVy6LPvoMPgjMdQ185nN6psJyBJ4yOpzqm695/h5umdLJg2vW3GR5iG11MAkR2AzJA=="
     },
     "lodash": {
-      "version": "4.17.21",
+      "version": "4.18.1",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.18.1.tgz",
-      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+      "integrity": "sha512-dMInicTPVE8d1e5otfwmmjlxkZoUpiVLwyeTdUsi/Caj/gfzzblBcCE5sRHV/AsjuCmxWrte2TNGSYuCeCq+0Q=="
     },
     "lodash.camelcase": {
       "version": "4.3.0",