Fix dependabot errors

I explicitly had to downgrade "@octokit/plugin-retry" to "^6.0.0". Other
dependencies were upgraded.

node_modules/@octokit/request/dist-src/defaults.js

@@ -0,0 +1,10 @@
+import { getUserAgent } from "universal-user-agent";
+import { VERSION } from "./version.js";
+var defaults_default = {
+  headers: {
+    "user-agent": `octokit-request.js/${VERSION} ${getUserAgent()}`
+  }
+};
+export {
+  defaults_default as default
+};