chore: Update discovery artifacts (#1472)

## Deleted keys were detected in the following stable discovery artifacts:
monitoring v1 https://github.com/googleapis/google-api-python-client/commit/75a5ced2b372723c21d45b172dd69e0bb91c5509

## Deleted keys were detected in the following pre-stable discovery artifacts:
ideahub v1alpha https://github.com/googleapis/google-api-python-client/commit/24483a4f512922f809fc8352b9407e606856b0e2
speech v1p1beta1 https://github.com/googleapis/google-api-python-client/commit/689fff21696add03b8c3ab843374b6bd2dd3cc16

## Discovery Artifact Change Summary:
feat(androidpublisher): update the api https://github.com/googleapis/google-api-python-client/commit/cf67afc22e94f856773895a4e603e7a9a6bfa20b
feat(apigee): update the api https://github.com/googleapis/google-api-python-client/commit/995336984e11fb9f91308d14a68faf8f3091d1fa
feat(appengine): update the api https://github.com/googleapis/google-api-python-client/commit/eb7a571470cef08641224558a7bd8eaa07a41bad
feat(chromepolicy): update the api https://github.com/googleapis/google-api-python-client/commit/5654776fdc8361aa0703a7dca8069b576a1b2f73
feat(cloudbuild): update the api https://github.com/googleapis/google-api-python-client/commit/437e37f1c36268464f90e075ffeaef61580de237
feat(cloudkms): update the api https://github.com/googleapis/google-api-python-client/commit/ebd3f49f78738792032e431b73233ae0c458bae3
feat(containeranalysis): update the api https://github.com/googleapis/google-api-python-client/commit/d446928f941d858022f0e1a1911bbf185920159d
feat(dialogflow): update the api https://github.com/googleapis/google-api-python-client/commit/0feb05616eb28db7c35e128ebbf338b63446b8cf
fix(fcm): update the api https://github.com/googleapis/google-api-python-client/commit/f1dd412cad2a2cdd1863bb2942cf07fc6a42b649
feat(ideahub): update the api https://github.com/googleapis/google-api-python-client/commit/24483a4f512922f809fc8352b9407e606856b0e2
feat(metastore): update the api https://github.com/googleapis/google-api-python-client/commit/897beb3754da50e117292f5954265076804acb7f
feat(monitoring): update the api https://github.com/googleapis/google-api-python-client/commit/75a5ced2b372723c21d45b172dd69e0bb91c5509
feat(osconfig): update the api https://github.com/googleapis/google-api-python-client/commit/c8b511a21f7fc7f2471d5f7a3b2d3760e4f8a629
feat(speech): update the api https://github.com/googleapis/google-api-python-client/commit/689fff21696add03b8c3ab843374b6bd2dd3cc16
feat(storagetransfer): update the api https://github.com/googleapis/google-api-python-client/commit/24564836842f792e9373ea505d97e775f64a5960
diff --git a/docs/dyn/iam_v1.projects.serviceAccounts.html b/docs/dyn/iam_v1.projects.serviceAccounts.html
index 1fc1949..6903bbc 100644
--- a/docs/dyn/iam_v1.projects.serviceAccounts.html
+++ b/docs/dyn/iam_v1.projects.serviceAccounts.html
@@ -534,7 +534,7 @@
     The object takes the form of:
 
 { # Deprecated. [Migrate to Service Account Credentials API](https://cloud.google.com/iam/help/credentials/migrate-api). The service account sign JWT request.
-  "payload": "A String", # Required. Deprecated. [Migrate to Service Account Credentials API](https://cloud.google.com/iam/help/credentials/migrate-api). The JWT payload to sign. Must be a serialized JSON object that contains a JWT Claims Set. For example: `{"sub": "user@example.com", "iat": 313435}` If the JWT Claims Set contains an expiration time (`exp`) claim, it must be an integer timestamp that is not in the past and no more than 1 hour in the future. If the JWT Claims Set does not contain an expiration time (`exp`) claim, this claim is added automatically, with a timestamp that is 1 hour in the future.
+  "payload": "A String", # Required. Deprecated. [Migrate to Service Account Credentials API](https://cloud.google.com/iam/help/credentials/migrate-api). The JWT payload to sign. Must be a serialized JSON object that contains a JWT Claims Set. For example: `{"sub": "user@example.com", "iat": 313435}` If the JWT Claims Set contains an expiration time (`exp`) claim, it must be an integer timestamp that is not in the past and no more than 12 hours in the future. If the JWT Claims Set does not contain an expiration time (`exp`) claim, this claim is added automatically, with a timestamp that is 1 hour in the future.
 }
 
   x__xgafv: string, V1 error format.