Fix visual coverage test in Github Actions (#339)

In addition to the changes in the [workflow PR](yext/slapshot-reusable-workflows#24), this up updates run-tests github action and coverage github action to pass mapbox api key so visual coverage test works as expected.

J=SLAP-2467
TEST=auto

see that run-tests github action and coverage github action passed -- looked into the logs, no false positive / errors related to visual coverage.

.github/workflows/coverage.yml

@@ -15,6 +15,7 @@ jobs:
       test_script: npm run test
     secrets:
       caller_github_token: ${{ secrets.GITHUB_TOKEN }}
+      MAPBOX_API_KEY: ${{ secrets.MAPBOX_API_KEY }}
   individual_coverage_percentages:
     if: ${{ github.event_name == 'pull_request' }}
     runs-on: ubuntu-latest

.github/workflows/run-tests.yml

@@ -13,11 +13,15 @@ jobs:
         npm i -D react@18 react-dom@18
         npm run build
       node_matrix: '["14.x", "16.x", "18.x"]'
+    secrets:
+      MAPBOX_API_KEY: ${{ secrets.MAPBOX_API_KEY }}
 
   call_run_tests-react-17:
     uses: yext/slapshot-reusable-workflows/.github/workflows/run_tests.yml@v1
     with:
       node_matrix: '["14.x", "16.x", "18.x"]'
+    secrets:
+      MAPBOX_API_KEY: ${{ secrets.MAPBOX_API_KEY }}
 
   call_run_tests-react-16:
     uses: yext/slapshot-reusable-workflows/.github/workflows/run_tests.yml@v1
@@ -26,3 +30,5 @@ jobs:
         npm i -D react@16.14 react-dom@16.14
         npm run build
       node_matrix: '["14.x", "16.x", "18.x"]'
+    secrets:
+      MAPBOX_API_KEY: ${{ secrets.MAPBOX_API_KEY }}