Update uefi-services requirement from 0.12 to 0.26 in /bootloader

[dependabot[bot]]

Updates the requirements on uefi-services to permit the latest version.

Commits

• 0f536a6 release: uefi-services v0.26.0
• ac54da4 Merge pull request #1709 from rust-osdev/uefi-services-temp
• 00372ca uefi-services: prepare v0.26.0 release to accelerate migration/deprecation
• 7283021 Merge pull request #1707 from rust-osdev/renovate/lock-file-maintenance
• 2f4abe8 chore(deps): lock file maintenance
• d5e07ab Merge pull request #1703 from rust-osdev/bishop-unpin-night
• e24491f Revert "ci: Temporarily pin to older nightly"
• 4276895 xtask: Skip uefi-macros ui tests on the nightly toolchain
• 4b94bd6 uefi/test-runner: Fix mismatched-lifetime-syntaxes lints
• 5d233a5 Merge pull request #1612 from rust-osdev/doc-devicepath
• Additional commits viewable in compare view

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