fix: upgrade sass from 1.60.0 to 1.63.6

Snyk has created this PR to upgrade sass from 1.60.0 to 1.63.6.

See this package in npm:
https://www.npmjs.com/package/sass

See this project in Snyk:
https://app.snyk.io/org/data.gov/project/22700983-7a0f-49aa-b664-c3f0abc51588?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -27,7 +27,7 @@
         "path": "^0.12.7",
         "postcss": "^8.4.23",
         "postcss-csso": "^5.0.1",
-        "sass": "^1.60.0",
+        "sass": "^1.63.6",
         "smooth-scroll": "^16.0.3",
         "uswds": "^2.14.0",
         "uswds-gulp": "github:uswds/uswds-gulp",