chore(kinesisfirehose-alpha): add ca-west-1 Firehose CIDR block (#31206)

### Issue # (if applicable)

Closes #29874

### Description of changes

Add missing CIDR block for `ca-west-1` + update snapshots. 

CIDRs pulled from [here](https://docs.aws.amazon.com/firehose/latest/dev/controlling-access.html#using-iam-rs).

### Description of how you validated changes

integ tests

### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: paulhcsun

packages/@aws-cdk/aws-iot-actions-alpha/test/kinesis-firehose/integ.firehose-put-record-action.js.snapshot/cdk.out

@@ -249,6 +249,9 @@
    "ca-central-1": {
     "FirehoseCidrBlock": "35.183.92.128/27"
    },
+   "ca-west-1": {
+    "FirehoseCidrBlock": "40.176.98.192/27"
+   },
    "cn-north-1": {
     "FirehoseCidrBlock": "52.81.151.32/27"
    },

packages/@aws-cdk/aws-iot-actions-alpha/test/kinesis-firehose/integ.firehose-put-record-action.js.snapshot/integ.json

@@ -252,6 +252,9 @@
    "ca-central-1": {
     "FirehoseCidrBlock": "35.183.92.128/27"
    },
+   "ca-west-1": {
+    "FirehoseCidrBlock": "40.176.98.192/27"
+   },
    "cn-north-1": {
     "FirehoseCidrBlock": "52.81.151.32/27"
    },

packages/@aws-cdk/aws-iot-actions-alpha/test/kinesis-firehose/integ.firehose-put-record-action.js.snapshot/manifest.json

@@ -270,6 +270,9 @@
    "ca-central-1": {
     "FirehoseCidrBlock": "35.183.92.128/27"
    },
+   "ca-west-1": {
+    "FirehoseCidrBlock": "40.176.98.192/27"
+   },
    "cn-north-1": {
     "FirehoseCidrBlock": "52.81.151.32/27"
    },

packages/@aws-cdk/aws-iot-actions-alpha/test/kinesis-firehose/integ.firehose-put-record-action.js.snapshot/test-stack.assets.json

@@ -223,6 +223,9 @@
    "ca-central-1": {
     "FirehoseCidrBlock": "35.183.92.128/27"
    },
+   "ca-west-1": {
+    "FirehoseCidrBlock": "40.176.98.192/27"
+   },
    "cn-north-1": {
     "FirehoseCidrBlock": "52.81.151.32/27"
    },

packages/@aws-cdk/aws-iot-actions-alpha/test/kinesis-firehose/integ.firehose-put-record-action.js.snapshot/test-stack.template.json

@@ -985,6 +985,9 @@
    "ca-central-1": {
     "FirehoseCidrBlock": "35.183.92.128/27"
    },
+   "ca-west-1": {
+    "FirehoseCidrBlock": "40.176.98.192/27"
+   },
    "cn-north-1": {
     "FirehoseCidrBlock": "52.81.151.32/27"
    },

packages/@aws-cdk/aws-iot-actions-alpha/test/kinesis-firehose/integ.firehose-put-record-action.js.snapshot/tree.json

@@ -1024,6 +1024,7 @@ export const FIREHOSE_CIDR_BLOCKS: { [region: string]: string } = {
   'ap-southeast-3': '108.136.221.64',
   'ap-southeast-4': '16.50.161.128',
   'ca-central-1': '35.183.92.128',
+  'ca-west-1': '40.176.98.192',
   'cn-north-1': '52.81.151.32',
   'cn-northwest-1': '161.189.23.64',
   'eu-central-1': '35.158.127.160',