Update kernel-installer version from 1.2.5 to 1.2.6

Highlights since v1.2.5:

• feat: Fedora/RHEL family support (dnf, binrpm-pkg, rpm install/uninstall)
• feat: repeatable --custom-config option (#15)
• security: verify kernel tarball downloads by default (SHA256, optional GPG)
• fix: hardening from static-analysis review (#13) — safe install-dir guard, version handling, updater ordering
• ci: multi-distro install tests (Debian 12/13, Ubuntu 22.04/24.04, Fedora 44) plus a custom-config smoke test

What's Changed

• Hardening pass + multi-distro install CI (kernel 6.12.112 verified on Debian 12/13, Ubuntu 22.04/24.04) by @tmiland-labs in #16
• Follow-up: verify kernel tarball by default + abort cleanly when the build produced no packages by @tmiland-labs in #17
• feat: add Fedora/RHEL family support by @tmiland-labs in #18
• chore: bump slib pin by @tmiland-labs in #19
• feat: add repeatable --custom-config option (adapted from #15) by @tmiland-labs in #20
• ci: add custom-config smoke test by @tmiland-labs in #21

New Contributors

• @tmiland-labs made their first contribution in #16

Full Changelog: v1.2.5...v1.2.6

Update kernel-installer version from 1.2.4 to 1.2.5

Update kernel-installer version from 1.2.3 to 1.2.4

What's Changed

Full Changelog: v1.2.2...v1.2.3

What's Changed

• Add script update argument by @tmiland in #9

Full Changelog: v1.2.1...v1.2.2

What's Changed

• Add changelog opt arg by @tmiland in #7

Full Changelog: v1.2.0...v1.2.1

What's Changed

• Get verified tarball by @tmiland in #3
• Add debug info arg by @tmiland in #4
• Add low latency arg by @tmiland in #5

Full Changelog: v1.0.1...v1.2.0

• Added nproc argument
• Updated help section
• Fixed custom config option arg not working if used
• Fixed mainline version number
• Reconstructed how versions are fetched
• Added check to skip download if file exists

• Initial release