chore: update python, IS and QA cert challenge 7 to hidden

curriculum/challenges/english/12-certificates/data-analysis-with-python-certificate/data-analysis-with-python-certificate.english.md

@@ -2,6 +2,7 @@
 id: 5e46fc95ac417301a38fb934
 title: Data Analysis with Python Certificate
 challengeType: 7
+isHidden: true
 isPrivate: true
 ---
 

curriculum/challenges/english/12-certificates/information-security-certificate/information-security-certificate.english.md

@@ -2,6 +2,7 @@
 id: 5e6021435ac9d0ecd8b94b00
 title: 'Information Security Certificate'
 challengeType: 7
+isHidden: true
 isPrivate: true
 ---
 

curriculum/challenges/english/12-certificates/machine-learning-with-python-certificate/machine-learning-with-python-certificate.english.md

@@ -2,6 +2,7 @@
 id: 5e46fc95ac417301a38fb935
 title: Machine Learning with Python Certificate
 challengeType: 7
+isHidden: true
 isPrivate: true
 ---
 

curriculum/challenges/english/12-certificates/quality-assurance-certificate/quality-assurance-certificate.english.md

@@ -2,6 +2,7 @@
 id: 5e611829481575a52dc59c0e
 title: 'Quality Assurance Certificate'
 challengeType: 7
+isHidden: true
 isPrivate: true
 ---
 

curriculum/challenges/english/12-certificates/scientific-computing-with-python-certificate/scientific-computing-with-python-certificate.english.md

@@ -2,6 +2,7 @@
 id: 5e44431b903586ffb414c951
 title: Scientific Computing with Python Certificate
 challengeType: 7
+isHidden: true
 isPrivate: true
 ---