Only a versioned download URL is provided for v2

[stewartmiles]

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Bug Description

google_sql_proxy (v1) could be downloaded from say https://dl.google.com/cloudsql/cloud_sql_proxy.linux.amd64 to grab the latest x64 Linux build. However, per the docs on https://cloud.google.com/sql/docs/postgres/connect-auth-proxy#linux-64-bit , only versioned download URLs are now published. Would it be possible to publish a "latest" URL that points at the latest release similar to what we had with v1? It would be great to reduce the number of manual upgrades we need to manage.

Example code (or command)

// paste your code or command here

Stacktrace

Steps to reproduce?

1. Go to https://cloud.google.com/sql/docs/postgres/connect-auth-proxy#linux-64-bit
2. Try to programmatically download the latest version of the v2 proxy

Environment

1. OS type and version: Linux x64, Windows x64, macOS (all archs)
2. Cloud SQL Proxy version (./cloud-sql-proxy --version): v2 all versions
3. Proxy invocation command (for example, ./cloud-sql-proxy --port 5432 INSTANCE_CONNECTION_NAME): N/A

Additional Details

No response