Update grafana-builder from Mar 2019 to Feb 2021

Brings in the following changes:
- Use default as a picker value for datasource variable #204
- allow table link in new tab #238
- allow setting a default datasource #301
- Add textPanel #341
- make status code label name overrideable in qpsPanel #397
- use $__rate_interval over $__interval #401
- Set shared tooltip to false by default #458
- Use custom 'all' value to avoid massive regexes in queries. #469

https://github.com/grafana/jsonnet-libs/commits/master/grafana-builder/

cortex-mixin/jsonnetfile.lock.json

@@ -8,8 +8,8 @@
           "subdir": "grafana-builder"
         }
       },
-      "version": "8f9d72b2e35b5f3cc1b7c2a8af9bbae7658804e2",
-      "sum": "ELsYwK+kGdzX1mee2Yy+/b2mdO4Y503BOCDkFzwmGbE="
+      "version": "0d13e5ba1b3a4c29015738c203d92ea39f71ebe2",
+      "sum": "GRf2GvwEU4jhXV+JOonXSZ4wdDv8mnHBPCQ6TUVd+g8="
     },
     {
       "source": {