Bump solid_cable from 1.0.3 to 3.0.2

Bumps [solid_cable](https://github.com/rails/solid_cable) from 1.0.3 to 3.0.2.
- [Release notes](https://github.com/rails/solid_cable/releases)
- [Commits](rails/solid_cable@v1.0.3...v3.0.2)

---
updated-dependencies:
- dependency-name: solid_cable
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -511,8 +511,11 @@ GEM
     snaky_hash (2.0.1)
       hashie
       version_gem (~> 1.1, >= 1.1.1)
-    solid_cable (1.0.3)
-      rails (< 9)
+    solid_cable (3.0.2)
+      actioncable (>= 7.2)
+      activejob (>= 7.2)
+      activerecord (>= 7.2)
+      railties (>= 7.2)
     solid_queue (1.0.0)
       activejob (>= 7.1)
       activerecord (>= 7.1)

db/cable_migrate/20240930231316_create_compact_channel.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+class CreateCompactChannel < ActiveRecord::Migration[7.2]
+  def change
+    change_column :solid_cable_messages, :channel, :binary, limit: 1024, null: false
+    add_column :solid_cable_messages, :channel_hash, :integer, limit: 8, if_not_exists: true
+    add_index :solid_cable_messages, :channel_hash, if_not_exists: true
+    change_column :solid_cable_messages, :payload, :binary, limit: 536_870_912, null: false
+
+    SolidCable::Message.find_each do |msg|
+      msg.update(channel_hash: SolidCable::Message.channel_hash_for(msg.channel))
+    end
+  end
+end