fix(curriculum): update regex to account for bracket notation (#42881)

* fix: update regex to account for bracket notation

fix minor bug in regex referring to literal dots with a dot
closes #42877

* account for both single and double quotes

Co-authored-by: awu43 <46470763+awu43@users.noreply.github.com>

* fix: make case sensitive

Co-authored-by: Ilenia <nethleen@gmail.com>

Co-authored-by: awu43 <46470763+awu43@users.noreply.github.com>
Co-authored-by: Ilenia <nethleen@gmail.com>

curriculum/challenges/english/06-quality-assurance/advanced-node-and-express/set-up-passport.md

@@ -111,7 +111,7 @@ Session and session secret should be correctly set up.
     (data) => {
       assert.match(
         data,
-        /secret:( |)process.env.SESSION_SECRET/gi,
+        /secret:( |)process\.env(\.SESSION_SECRET|\[(?<q>"|')SESSION_SECRET\k<q>\])/g,
         'Your express app should have express-session set up with your secret as process.env.SESSION_SECRET'
       );
     },