chore(pack): source eight mods from the Modrinth CDN

Replaces CurseForge metadata downloads with direct Modrinth CDN URLs for
every mod in the pack that Modrinth actually hosts, so those jars no longer
need the CurseForge API to resolve: apotheosis, apothic-attributes,
apothic-combat, apothic-enchanting, apothic-spawners, architectury-api,
patchouli, placebo.

Each was matched to the Modrinth file whose sha1 is identical to the
CurseForge file already pinned in the pack, so no mod version changes.
Apothic Attributes is the one exception: the CurseForge and Modrinth jars
both report 1.21.1-2.10.1 but differ by a single build timestamp inside
META-INF/MANIFEST.MF, with every other archive entry byte-identical.

Nine mods stay on CurseForge because they have no Modrinth project at all:
AllTheLeaks, Collapsible Groups, The Twilight Forest, and the six FTB mods
(Backups 3, Chunks, Library, Quests, Teams, XMod Compat). FTB is
CurseForge-exclusive, as are the other three.

Download hashes move from sha1 to sha512, packwiz's format for Modrinth.

mods/apothic-enchanting.pw.toml

@@ -3,11 +3,11 @@ filename = "ApothicEnchanting-1.21.1-1.6.2.jar"
 side = "both"
 
 [download]
-hash-format = "sha1"
-hash = "2623af251d3ddeae1d8e710afa76afe753834bab"
-mode = "metadata:curseforge"
+url = "https://cdn.modrinth.com/data/pL8MtgqY/versions/2vH7csNR/ApothicEnchanting-1.21.1-1.6.2.jar"
+hash-format = "sha512"
+hash = "e03864db8d32a60116dd9b870e7ba7f62564a85180c6b35cfd486deffef4c586254c527c45ab3c0750a4224d732d2c389d2ae84dbfae99ca7f70ee2ba9e7f9c6"
 
 [update]
-[update.curseforge]
-file-id = 8797650
-project-id = 1063926
+[update.modrinth]
+mod-id = "pL8MtgqY"
+version = "2vH7csNR"