microsoft-vscode-azext-utils v2.5.0

What's Changed

• utils: Add stash and dispose methods for readonly contents by @JasonYeMSFT in #1719
• Add API to dispose single readonly content by @JasonYeMSFT in #1720

Full Changelog: microsoft-vscode-azext-utils-v2.4.0...microsoft-vscode-azext-utils-v2.5.0