tools-v3.1.0

This release upgrades the underlying FreeType dependency in the glyph renderer to the latest version (2.13.3). This should also resolve issues when trying to build with the protoc-from-src feature flag.

There are no public API changes.

PRs landed

• Cleanup cargo toml by @ianthetechie in #26
• Upgrade all dependencies to latest compatible versions by @lseelenbinder in #25
• Add protoc-from-src regression test in CI by @ianthetechie in #28

Full Changelog: cli-v1.4.3...tools-v3.1.0