Drop support for Magisk versions <25102

These versions are missing Magisk commit
1f8c063dc64806c4f7320ed66c785ff7bc116383, which fixes booting into
recovery on devices that use Android 13 GKIs. Trying to use these
versions with avbroot would prevent the user from installing future OTAs
without manually flashing a boot image patched with a newer Magisk
version while booted into Android first.

Signed-off-by: Andrew Gunnerson <accounts+github@chiller3.com>

avbroot/boot.py

@@ -52,11 +52,16 @@ class MagiskRootPatch(BootImagePatch):
     Root the boot image with Magisk.
     '''
 
-    # Half-open intervals. Versions 25207 through 25210, which temporarily
-    # introduced the rules device stored in rdev major/minor form, are not
-    # supported.
+    # - Half-open intervals.
+    # - Versions <25102 are not supported because they're missing commit
+    #   1f8c063dc64806c4f7320ed66c785ff7bc116383, which would leave devices
+    #   that use Android 13 GKIs unable to boot into recovery
+    # - Versions 25207 through 25210 are not supported because they used the
+    #   RULESDEVICE config option, which stored the writable block device as an
+    #   rdev major/minor pair, which was not consistent across reboots and was
+    #   replaced by PREINITDEVICE
     VERS_SUPPORTED = (
-        util.Range(22000, 25207),
+        util.Range(25102, 25207),
         util.Range(25211, 26002),
     )
     VER_PREINIT_DEVICE = util.Range(25211, VERS_SUPPORTED[-1].end)