Just delete *all* the config snapshots

config/sync/config_snapshot.snapshot.config_sync.module.geo_upgrade.yml

@@ -1,27 +0,0 @@
-uuid: 371cab72-414d-48bb-8bd9-2fd973d6860b
-langcode: en
-status: true
-dependencies:
-  module:
-    - geo_upgrade
-id: config_sync.module.geo_upgrade
-snapshotSet: config_sync
-extensionType: module
-extensionName: geo_upgrade
-items:
-  -
-    collection: ''
-    name: migrate_plus.migration_group.migrate_drupal_7_geo
-    data:
-      langcode: en
-      id: migrate_drupal_7_geo
-      label: 'Import from Drupal 7'
-      description: 'Migrate from the D7 version of the site'
-      source_type: 'Drupal 7'
-      shared_configuration:
-        source:
-          key: drupal7
-      dependencies:
-        enforced:
-          module:
-            - geo_upgrade