Install @adobe/node-fetch-retry

In preparation for using it in `src/downloader.ts`.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

package-lock.json

@@ -29,6 +29,7 @@
   "dependencies": {
     "@actions/cache": "^1.0.6",
     "@actions/core": "^1.2.6",
+    "@adobe/node-fetch-retry": "^1.1.0",
     "node-fetch": "^2.6.1",
     "unzipper": "^0.10.11"
   },