Prepare release v265

[heroku-linguist]

Commits since the last release:

• Fail on conflicting package manager metadata in package.json (Fail on conflicting package manager metadata in package.json #1317)
• Update Inventory for heroku/nodejs engine (Update Node.js Engine Inventory #1323)
• Update Inventory for heroku/nodejs yarn (Update Node.js Yarn Inventory #1322)
• Fixed application dir used for COREPACK_HOME in CI env (Fixed application dir used for COREPACK_HOME in CI env #1320)

For the full diff, see the compare view:
v264...main