ci(travis): try pa11y-ci config with a path to Chrome executable

pa11y/pa11y-ci#198 (comment)

.pa11yci-linux.js

@@ -0,0 +1,22 @@
+/*
+[NOTE] Configuration Pa11y CI file for Linux completely repeats the contents of “.pa11yci.js”
+except that it contains the “chromeLaunchConfig” option.
+*/
+
+module.exports = {
+	defaults: {
+		/* [REQUIRED] Path to Chrome executable file on Linux:
+		https://github.com/pa11y/pa11y-ci#pa11y-ci-3-and-ubuntu
+		https://github.com/pa11y/pa11y-ci/issues/198#issuecomment-1418343240 */
+		chromeLaunchConfig: {
+			"executablePath": "/usr/bin/google-chrome"
+		},
+		hideElements: [
+			"code",
+			"#___gcse_0", ".gstl_50",
+			".skiptranslate", "#goog-gt-votingForm", "#goog-gt-votingInputSrcLang",
+			"#goog-gt-votingInputTrgLang", "#goog-gt-votingInputSrcText", "#goog-gt-votingInputTrgText",
+			"#goog-gt-votingInputVote", "#goog-gt-votingHiddenPane"
+			]
+	}
+};

.travis.yml

@@ -12,6 +12,11 @@ python: 3.12
 addons:
   chrome: stable
 
+install:
+- nvm install node
+- npm install --global fkill-cli http-server pa11y-ci
+- pip install linkchecker
+
 cache:
   directories:
   - node_modules
@@ -22,11 +27,6 @@ cache:
   # - .venv/Lib/site-packages
   # - .venv/Scripts
 
-install:
-- nvm install node
-- npm install --global fkill-cli http-server pa11y-ci
-- pip install linkchecker
-
 before_script:
 - pa11y-ci --version
 - linkchecker --version
@@ -35,7 +35,7 @@ before_script:
 # - nohup http-server --port 4147 &
 
 script:
-- pa11y-ci http://localhost:4147/KiraTestedHTML.html
+- pa11y-ci --config .pa11yci-linux.js http://localhost:4147/KiraTestedHTML.html
 - linkchecker http://localhost:4147/KiraTestedHTML.html
 - fkill :4147 --force --verbose
 # - linkchecker http://localhost:4147/KiraTestedHTML.html