Update Node.js versions to 22.22.0 and 24.13.0 LTS (#65)

Updates the project to test against the latest LTS versions of Node.js:

Node.js 24.13.0 (Active LTS "Krypton"):
- Released May 6, 2025
- Latest security patches from January 13, 2026
- Active LTS until April 2028
- Replaces Node.js 20

Node.js 22.22.0 (Maintenance LTS "Jod"):
- Released April 24, 2024
- Latest security patches from January 13, 2026
- Maintenance LTS until April 2027
- Updated from 22.19.0

Changes:
- Renamed 20/ directory to 24/
- Updated 24/Dockerfile: NODE_VERSION=24.13.0
- Updated 22/Dockerfile: NODE_VERSION=22.22.0
- Updated test specs to expect correct versions
- All tests pass successfully

This ensures the project tests against currently supported LTS versions
with the latest security updates.

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

Author: chorrell

22/Dockerfile

@@ -1,7 +1,7 @@
 FROM debian:trixie-slim
 
 ENV NPM_CONFIG_LOGLEVEL=info
-ENV NODE_VERSION=22.19.0
+ENV NODE_VERSION=22.22.0
 
 # gpg keys listed at https://github.com/nodejs/node
 RUN ARCH= OPENSSL_ARCH= && dpkgArch="$(dpkg --print-architecture)" \

20/Dockerfile 24/Dockerfile20/Dockerfile renamed to 24/Dockerfile

@@ -1,7 +1,7 @@
 FROM debian:trixie-slim
 
 ENV NPM_CONFIG_LOGLEVEL=info
-ENV NODE_VERSION=20.19.5
+ENV NODE_VERSION=24.13.0
 
 # gpg keys listed at https://github.com/nodejs/node
 RUN ARCH= OPENSSL_ARCH= && dpkgArch="$(dpkg --print-architecture)" \

spec/22/Dockerfile_spec.rb

@@ -12,7 +12,7 @@
     create_image(tag)
   end
 
-  test_node("22.19.0")
+  test_node("22.22.0")
 
   test_npm
 

spec/20/Dockerfile_spec.rb spec/24/Dockerfile_spec.rbspec/20/Dockerfile_spec.rb renamed to spec/24/Dockerfile_spec.rb

@@ -12,7 +12,7 @@
     create_image(tag)
   end
 
-  test_node("20.19.5")
+  test_node("24.13.0")
 
   test_npm