ISO: Update download link

ISO updated because `rpm-ostree` version `2024.8` has the problem with incorrect SELinux labelling.

README.md

@@ -186,9 +186,9 @@ Settings applied by default:
 > [!CAUTION]
 > This ISO installation guide assumes that you want to install Gidro-OS on single-boot single-disk setup.
 
-### [DOWNLOAD LINK](https://archive.org/download/gidro-os_01-12-2024/home/runner/work/gidro-os/gidro-os/upload/gidro-os_01-12-2024.iso)
-### [TORRENT LINK](https://archive.org/download/gidro-os_01-12-2024/gidro-os_01-12-2024_archive.torrent)<br/>(higher download speed)
-### [ISO CHECKSUM](https://archive.org/download/gidro-os_01-12-2024/home/runner/work/gidro-os/gidro-os/upload/gidro-os_01-12-2024.iso-CHECKSUM)<br/>(verify the checksum if ISO is downloaded correctly with apps like [Collision](https://flathub.org/apps/dev.geopjr.Collision))
+### [DOWNLOAD LINK](https://archive.org/download/gidro-os_21-12-2024/home/runner/work/gidro-os/gidro-os/upload/gidro-os_21-12-2024.iso)
+### [TORRENT LINK](https://archive.org/download/gidro-os_21-12-2024/gidro-os_21-12-2024_archive.torrent)<br/>(higher download speed)
+### [ISO CHECKSUM](https://archive.org/download/gidro-os_21-12-2024/home/runner/work/gidro-os/gidro-os/upload/gidro-os_21-12-2024.iso-CHECKSUM)<br/>(verify the checksum if ISO is downloaded correctly with apps like [Collision](https://flathub.org/apps/dev.geopjr.Collision))
 
 - ISO doesn't require an active internet connection during its usage (but it is recommended to have it, to make NTP working).
 - Download the ISO & proceed with installation.