test(ios): delete Podfile.lock on pod install

in practice this file is out of date and causes failures more often
than having it survive the install is useful.

github actions cache will still pull from the secondary key and get
reasonable caching behavior even if the lockfile hash changes

package.json

@@ -46,7 +46,7 @@
     "tests:ios:test-reuse": "cd tests && SIMCTL_CHILD_GULGeneratedClassDisposeDisabled=1 yarn detox test --configuration ios.sim.debug --reuse --loglevel warn",
     "tests:ios:test-cover": "cd tests && SIMCTL_CHILD_GULGeneratedClassDisposeDisabled=1 ./node_modules/.bin/nyc yarn detox test --configuration ios.sim.debug --loglevel warn",
     "tests:ios:test-cover-reuse": "cd tests && SIMCTL_CHILD_GULGeneratedClassDisposeDisabled=1 node_modules/.bin/nyc yarn detox test --configuration ios.sim.debug --reuse --loglevel warn",
-    "tests:ios:pod:install": "cd tests && rm -rf ios/ReactNativeFirebaseDemo.xcworkspace && yarn pod-install",
+    "tests:ios:pod:install": "cd tests && rm -f ios/Podfile.lock && rm -rf ios/ReactNativeFirebaseDemo.xcworkspace && yarn pod-install",
     "format:markdown": "prettier --write \"docs/**/*.md\""
   },
   "devDependencies": {