Use non-deprecated Algolia setting names

Author: cwickham

.github/workflows/algolia-config.json

@@ -4,13 +4,13 @@
     "minWordSizefor2Typos": 8,
     "hitsPerPage": 20,
     "maxValuesPerFacet": 100,
-    "attributesToIndex": [
+    "searchableAttributes": [
       "unordered(title)",
       "unordered(section)",
       "unordered(text)",
       "unordered(href)"
     ],
-    "numericAttributesToIndex": null,
+    "numericAttributesForFiltering": null,
     "attributesToRetrieve": null,
     "unretrievableAttributes": null,
     "optionalWords": null,

.github/workflows/test-algolia-upload.yml

@@ -2,6 +2,9 @@
 name: Test Algolia Upload
 on:
   workflow_dispatch:
+  push:
+    branches:
+      - algolia
 jobs:
   test-upload:
     runs-on: ubuntu-latest