All you can do is ignore those messages as iwlwifi-7265D-26.ucode and iwlwifi-7265D-25.ucode were never released to the linux-firmware git site.
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/
The iwlmvm module handles the firmware upload and will look for the highest version supported by the kernel, if not found it will write an error message to the log and look for the next lower number and continue the cycle until it finds firmware or arrives at the lowest version supported