feat: use preview of covidcast v1.12.4

Author: sgratzl

content/covidcast/release-log/headless/v1.12.4.md

@@ -0,0 +1,14 @@
+---
+title: v1.12.4
+date: 2021-01-19
+---
+
+This release improves the UX of the survey dashboard for both desktop and mobile experience.
+
+#### New Features
+
+- [#724](https://github.com/cmu-delphi/www-covidcast/pull/724), [#717](https://github.com/cmu-delphi/www-covidcast/pull/717) Survey dashboards improvements
+
+#### Bug-fixes
+
+- [#719](https://github.com/cmu-delphi/www-covidcast/pull/719) (re: [#718](https://github.com/cmu-delphi/www-covidcast/issues/718)) fix Export Data bug

package-lock.json

@@ -7,7 +7,7 @@
     "highlight.js": "^10.5.0",
     "katex": "^0.12.0",
     "uikit": "^3.6.5",
-    "www-covidcast": "https://github.com/cmu-delphi/www-covidcast/releases/download/v1.12.3/www-covidcast-1.12.3.tgz"
+    "www-covidcast": "github:cmu-delphi/www-covidcast#4fc1ffb4c82d3845ade7760b076908a25a49b04f"
   },
   "devDependencies": {
     "hugo-bin": "^0.67.1",