maint: upgrade babel + deps, actions

This commit upgrades a bunch of deps, avoiding breaking changes where
possible. One breaking change is introduced - removing `isparta` in
favour of `nyc` (and `istanbul`).

This commit also upgrades the GitHub actions to latest versions.

Ref:
- https://gus.lightning.force.com/lightning/r/ADM_Work__c/a07EE00001rfcK8YAI/view
- https://github.com/heroku/react-refetch/security/dependabot/51

.github/workflows/ci.yml

@@ -15,18 +15,18 @@ jobs:
         ts-version: ['3.9', '4.1', '5.0']
         react-version: ['16']
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-      
+
       - name: Install Dependencies
         run: npm ci
 
       - name: Install TypeScript ${{ matrix.ts-version }}
         run: npm install typescript@${{ matrix.ts-version }}
-      
+
       - name: Install React ${{ matrix.react-version }}
         run: npm install react@${{ matrix.react-version }}
 

.gitignore

@@ -4,3 +4,4 @@ npm-debug.log
 dist
 lib
 coverage
+.nyc_output