Remove proxy-cached feature flag

[Copilot]

The proxy-cached experiment flag has been rolled out and is now always enabled. This PR removes the conditional logic as the proxy now defaults to cached mode.

Changes:

• Removed experiments['proxy-cached'] check from Updater.runUpdater()
• Removed cachedMode parameter from ProxyBuilder constructor
• Removed PROXY_CACHE environment variable (no longer needed as proxy defaults to cached mode)
• Updated integration tests to reflect simplified API

Before:

const cachedMode = this.details.experiments?.hasOwnProperty('proxy-cached') === true
const proxyBuilder = new ProxyBuilder(this.docker, this.proxyImage, cachedMode)

After:

const proxyBuilder = new ProxyBuilder(this.docker, this.proxyImage)
// Proxy now defaults to cached mode, no env var needed

Original prompt

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This section details on the original issue you should resolve

<issue_title>Remove the proxy-cached feature flag from dependabot-action</issue_title>
<issue_description></issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes github/dependabot-updates#12002

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[pavera]

@copilot also do not set the PROXY_CACHE env var when running the proxy container. The proxy is also being modified to default to cached mode so this env var is no longer used

[Copilot]

@copilot also do not set the PROXY_CACHE env var when running the proxy container. The proxy is also being modified to default to cached mode so this env var is no longer used

Done. Removed the PROXY_CACHE environment variable in commit 6d4cf2a.

[Copilot]

Pull request overview

This PR removes the proxy-cached feature flag that has been rolled out and is now always enabled, simplifying the codebase by removing conditional logic around proxy caching.

Changes:

• Removed the cachedMode parameter from the ProxyBuilder constructor
• Removed the PROXY_CACHE environment variable from proxy container configuration
• Removed the experiments['proxy-cached'] check from the Updater.runUpdater() method

Reviewed changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/updater.ts	Removed the cachedMode variable and conditional logic checking for the proxy-cached experiment flag, simplified ProxyBuilder instantiation
src/proxy.ts	Removed cachedMode parameter from constructor and removed PROXY_CACHE environment variable from container configuration
dist/main/index.js	Updated compiled JavaScript to reflect source code changes
tests/updater-builder-integration.test.ts	Simplified test to remove cachedMode parameter, but introduced a bug with incorrect argument order
tests/proxy-integration.test.ts	Simplified test to remove cachedMode parameter

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