Upgrade Mjolnir (1.3.1 -> 1.3.2)

roles/matrix-bot-mjolnir/defaults/main.yml

@@ -4,7 +4,7 @@
 
 matrix_bot_mjolnir_enabled: true
 
-matrix_bot_mjolnir_version: "v1.3.1"
+matrix_bot_mjolnir_version: "v1.3.2"
 
 matrix_bot_mjolnir_container_image_self_build: false
 matrix_bot_mjolnir_container_image_self_build_repo: "https://github.com/matrix-org/mjolnir.git"