v16.0.0-rc2

This is the second release candidate of v16.0.0 actors, that will power Filecoin nv25.

What's Changed

• chore: update dependencies by @Stebalien in #1599
• chore: update rust to 1.81 by @Stebalien in #1587
• test: switch from ethers to alloy by @Stebalien in #1602
• test: cleanup EVM test contracts by @Stebalien in #1603
• chore: update upload-artifact action to v4 by @galargh in #1608
• Use docker environment to build the actors reproducibly by @Stebalien in #1606
• chore(deps): remove const-hex dependency by @rvagg in #1626
• build: ensure we have the correct toolchain installed by @Stebalien in #1644
• chore(deps): remove unmaintained paste crate from dependencies by @rvagg in #1648
• fip-0098: simplify termination fee by @LesnyRumcajs in #1639
• FIP-0100: whole feature branch by @rvagg in #1630
• chore: update ref-fvm to v4.6.0 (and update the actors utils to match) by @Stebalien in #1653

Full Changelog: v16.0.0-dev1...v16.0.0-rc2