Merge tag 'efi-2025-07-rc3' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull-request efi-2025-07-rc3

CI:

* https://source.denx.de/u-boot/custodians/u-boot-efi/-/pipelines/26146

Documentation:

* Improve the pytest documentation
* u-boot-test-reset: mention power cycling
* describe u-boot-test-release
* correct link to QEMU
* describe that RISC-V supports semihosting

UEFI:

* link libggc via PLATFORM_LIBGCC to EFI binaries
* allow suppressing ANSI output in dtbdump.efi
* test/py/test_efi_fit: test fdt and initrd

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