chore: increase retry waiting intervals and attempt counts (#3018)

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Even though we already retry e2e jobs 3 times, we are still getting
failures on the scheduled `health_checks` workflow.

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https://github.com/aws-amplify/amplify-backend/actions/runs/18258502550/job/51983262437

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Increased the number of attempts to 5. Increased the waiting interval
between retries from 30 seconds to 300 seconds.

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Author: iankhou

.github/actions/run_with_e2e_account/action.yml

@@ -27,11 +27,11 @@ inputs:
   retry_attempts:
     description: Number of retry attempts for the main script
     required: false
-    default: '3'
+    default: '5'
   retry_delay:
     description: Delay between retry attempts in seconds
     required: false
-    default: '30'
+    default: '300'
 runs:
   using: composite
   steps: