Release `v0.11.5` - Githubissues

What's Changed

RacyCell: Data race allowed on T by @kuzeyardabulut in https://github.com/rust-osdev/bootloader/pull/390
Update license field following SPDX 2.1 license expression standard by @frisoft in https://github.com/rust-osdev/bootloader/pull/391
kernel image fields & zero out rbp by @devsnek in https://github.com/rust-osdev/bootloader/pull/346
Update rustix dependency by @phil-opp in https://github.com/rust-osdev/bootloader/pull/398
Add an additional MB of space to the generated FAT partition by @kennystrawnmusic in https://github.com/rust-osdev/bootloader/pull/397
Fix: Enable test runner again by @phil-opp in https://github.com/rust-osdev/bootloader/pull/407
Fix: Mark ramdisk as used in memory map by @phil-opp in https://github.com/rust-osdev/bootloader/pull/408

Full Changelog: https://github.com/rust-osdev/bootloader/compare/v0.11.4...v0.11.5