test: avoid shell-splitting when calling git; use execFileSync to pass filename as arg (fix Windows/WSL test)

Author: WillyEverGreen

lib/node_modules/@stdlib/_tools/eslint/rules/jsdoc-license-header-year/lib/main.js

@@ -21,6 +21,7 @@
 // MODULES //
 
 var execSync = require( 'child_process' ).execSync;
+var execFileSync = require( 'child_process' ).execFileSync;
 var replace = require( '@stdlib/string/replace' );
 
 
@@ -99,7 +100,8 @@ function main( context ) {
 
 			// Use `git` to determine the year the file was created...
 			try {
-				expected = execSync( 'git log --diff-filter=A --follow --format=%ad --date=short -- '+filename, {
+				// Use execFileSync with argument array to avoid shell word-splitting for paths
+				expected = execFileSync( 'git', [ 'log', '--diff-filter=A', '--follow', '--format=%ad', '--date=short', '--', filename ], {
 					'encoding': 'utf8'
 				});
 				expected = expected.split( '-' )[ 0 ];