Bedrock knowledge base stack creation failed in regions other than us-east-1

[blairhyy-amazon]

embedding model arn has a fixed region

application-signals-demo/cdk/eks/lib/stacks/knowledge-base-stack.ts

Line 213 in 8fa2d9f

embeddingModelArn: 'arn:aws:bedrock:us-east-1::foundation-model/amazon.titan-embed-text-v2:0',