feat: Tune Secret Manager auto retry parameters

google-cloud-secretmanager/src/main/java/com/google/cloud/secretmanager/v1/stub/SecretManagerServiceStubSettings.java

@@ -467,7 +467,7 @@ public static class Builder
           "retry_policy_1_codes",
           ImmutableSet.copyOf(
               Lists.<StatusCode.Code>newArrayList(
-                  StatusCode.Code.UNAVAILABLE, StatusCode.Code.UNKNOWN)));
+                  StatusCode.Code.UNAVAILABLE, StatusCode.Code.RESOURCE_EXHAUSTED)));
       RETRYABLE_CODE_DEFINITIONS = definitions.build();
     }
 
@@ -486,8 +486,8 @@ public static class Builder
       definitions.put("no_retry_0_params", settings);
       settings =
           RetrySettings.newBuilder()
-              .setInitialRetryDelay(Duration.ofMillis(1000L))
-              .setRetryDelayMultiplier(1.3)
+              .setInitialRetryDelay(Duration.ofMillis(2000L))
+              .setRetryDelayMultiplier(2.0)
               .setMaxRetryDelay(Duration.ofMillis(60000L))
               .setInitialRpcTimeout(Duration.ofMillis(60000L))
               .setRpcTimeoutMultiplier(1.0)

synth.metadata

@@ -4,15 +4,15 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-secretmanager.git",
-        "sha": "d451ba74481819f8563ab4b2224dd0bfb7424492"
+        "sha": "e509afb6236f553d3fd6f8fab924bf0d7dd81fc6"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "551681f25e36b11829e87e580281350461f4f3f5",
-        "internalRef": "379784268"
+        "sha": "1eade8161f2ef102282869bc3eb18841807b2b46",
+        "internalRef": "383886699"
       }
     },
     {