Feature/update v3 migrations

Update and add one migration for migrating to v3

gso/migrations/versions/2025-04-18_fffe36624681_update_ip_trunk_descriptions.py

+"""Update IP Trunk descriptions.
+
+Removes an outdated to `geant_s_sid` in IP Trunk descriptions. This field has been renamed and adds unnecessary clutter
+to the description field.
+
+Revision ID: fffe36624681
+Revises: c38adde1a18e
+Create Date: 2025-04-18 09:41:28.463681
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = 'fffe36624681'
+down_revision = 'c38adde1a18e'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    conn = op.get_bind()
+    conn.execute(
+        sa.text(
+            """
+UPDATE subscriptions
+SET    description = Replace(description, 'geant_s_sid:', '')
+WHERE  product_id = (SELECT product_id
+                     FROM   products p
+                     WHERE  p.tag = 'IPTRUNK');
+            """
+        )
+    )
+
+
+def downgrade() -> None:
+    # Do nothing
+    pass