Bump Nerves systems to 1.31.1 versions

Author: fhunleth

.circleci/config.yml

@@ -2,16 +2,16 @@ version: 2.1
 
 defaults: &defaults
   docker:
-    - image: hexpm/elixir:1.18.3-erlang-27.3.3-ubuntu-jammy-20250404
+    - image: hexpm/elixir:1.18.4-erlang-27.3.4.1-ubuntu-jammy-20250619
   environment:
     MIX_ENV: prod
 
 install_fwup: &install_fwup
   run:
     name: Install fwup
     command: |
-      wget https://github.com/fwup-home/fwup/releases/download/v1.12.0/fwup_1.12.0_amd64.deb
-      dpkg -i fwup_1.12.0_amd64.deb
+      wget https://github.com/fwup-home/fwup/releases/download/v1.13.0/fwup_1.13.0_amd64.deb
+      dpkg -i fwup_1.13.0_amd64.deb
 
 install_system_deps: &install_system_deps
   run:

.tool-versions

@@ -1,2 +1,2 @@
-erlang 27.3.3
-elixir 1.18.3-otp-27
+erlang 27.3.4.1
+elixir 1.18.4-otp-27