DEV: Set database checkout timeout to 10 on CI (#25604)

Why this change?

We have been seeing checkout timeouts happening on CI when using the
default of 5 seconds. This can happen in system tests when the server
has to process many requests using the same database connection.
Therefore, we will double the timeout for now and monitor if stuff
continues to timeout.

.github/workflows/tests.yml

@@ -236,10 +236,14 @@ jobs:
 
       - name: Core System Tests
         if: matrix.build_type == 'system' && matrix.target == 'core'
+        env:
+          CHECKOUT_TIMEOUT: 10
         run: RAILS_ENABLE_TEST_LOG=1 RAILS_TEST_LOG_LEVEL=error PARALLEL_TEST_PROCESSORS=4 bin/turbo_rspec --use-runtime-info --profile=50 --verbose --format documentation spec/system
 
       - name: Plugin System Tests
         if: matrix.build_type == 'system' && matrix.target == 'plugins'
+        env:
+          CHECKOUT_TIMEOUT: 10
         run: |
           GLOBIGNORE="plugins/chat/*";
           LOAD_PLUGINS=1 RAILS_ENABLE_TEST_LOG=1 RAILS_TEST_LOG_LEVEL=error PARALLEL_TEST_PROCESSORS=4 bin/turbo_rspec --use-runtime-info --profile=50 --verbose --format documentation plugins/*/spec/system
@@ -248,11 +252,15 @@ jobs:
 
       - name: Chat System Tests
         if: matrix.build_type == 'system' && matrix.target == 'chat'
+        env:
+          CHECKOUT_TIMEOUT: 10
         run: LOAD_PLUGINS=1 RAILS_ENABLE_TEST_LOG=1 RAILS_TEST_LOG_LEVEL=error PARALLEL_TEST_PROCESSORS=4 bin/turbo_rspec --use-runtime-info --profile=50 --verbose --format documentation plugins/chat/spec/system
         timeout-minutes: 30
 
       - name: Theme System Tests
         if: matrix.build_type == 'system' && matrix.target == 'themes'
+        env:
+          CHECKOUT_TIMEOUT: 10
         run: |
           RAILS_ENABLE_TEST_LOG=1 RAILS_TEST_LOG_LEVEL=error PARALLEL_TEST_PROCESSORS=4 bin/turbo_rspec --profile=50 --verbose --format documentation tmp/themes/*/spec/system
         shell: bash

config/database.yml

@@ -38,6 +38,7 @@ test:
   min_messages: warning
   pool: 1
   reaping_frequency: 0
+  checkout_timeout: <% ENV["CHECKOUT_TIMEOUT"] || 5 %>
   host_names:
     - test.localhost