chore: add new intern michelle-wangg to list (#31411)

### Issue # (if applicable)
N/A

### Reason for this change
New intern on the CDK Abstractions team, needs to added to list of team
members

### Description of changes
Add Michelle's GitHub username to list of core members.

### Description of how you validated changes
N/A

### Checklist
- [x] My code adheres to the [CONTRIBUTING
GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and
[DESIGN
GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache-2.0 license*

Co-authored-by: Michelle Wang <[email protected]>

Author: michelle-wangg

.github/workflows/github-merit-badger.yml

@@ -17,4 +17,4 @@ jobs:
           badges: '[beginning-contributor,repeat-contributor,valued-contributor,admired-contributor,star-contributor,distinguished-contributor]'
           thresholds: '[0,3,6,13,25,50]'
           badge-type: 'achievement'
-          ignore-usernames: '[rix0rrr,iliapolo,otaviomacedo,kaizencc,comcalvi,TheRealAmazonKendra,vinayak-kukreja,mrgrain,pahud,cgarvis,kellertk,ashishdhingra,HBobertz,sumupitchayan,SankyRed,udaypant,colifran,khushail,scanlonp,mikewrighton,moelasmar,paulhcsun,awsmjs,evgenyka,GavinZZ,aaythapa,xazhao,ConnorRobertson,ssenchenko,gracelu0,jfuss,SimonCMoore,shikha372,kirtishrinkhala,godwingrs22,bergjaak,IanKonlog,Leo10Gama,samson-keung,scorbiere,aws-cdk-automation,dependabot[bot],mergify[bot]]'
+          ignore-usernames: '[rix0rrr,iliapolo,otaviomacedo,kaizencc,comcalvi,TheRealAmazonKendra,vinayak-kukreja,mrgrain,pahud,cgarvis,kellertk,ashishdhingra,HBobertz,sumupitchayan,SankyRed,udaypant,colifran,khushail,scanlonp,mikewrighton,moelasmar,paulhcsun,awsmjs,evgenyka,GavinZZ,aaythapa,xazhao,ConnorRobertson,ssenchenko,gracelu0,jfuss,SimonCMoore,shikha372,kirtishrinkhala,godwingrs22,bergjaak,IanKonlog,Leo10Gama,samson-keung,scorbiere,michelle-wangg,aws-cdk-automation,dependabot[bot],mergify[bot]]'

.mergify.yml

@@ -11,7 +11,7 @@ pull_request_rules:
       label:
         add: [ contribution/core ]
     conditions:
-      - author~=^(rix0rrr|iliapolo|otaviomacedo|kaizencc|comcalvi|TheRealAmazonKendra|vinayak-kukreja|mrgrain|pahud|ashishdhingra|cgarvis|kellertk|HBobertz|sumupitchayan|SankyRed|udaypant|colifran|scanlonp|mikewrighton|moelasmar|paulhcsun|awsmjs|evgenyka|GavinZZ|aaythapa|xazhao|ConnorRobertson|ssenchenko|gracelu0|jfuss|SimonCMoore|shikha372|kirtishrinkhala|godwingrs22|bergjaak|samson-keung|IanKonlog|Leo10Gama|scorbiere)$
+      - author~=^(rix0rrr|iliapolo|otaviomacedo|kaizencc|comcalvi|TheRealAmazonKendra|vinayak-kukreja|mrgrain|pahud|ashishdhingra|cgarvis|kellertk|HBobertz|sumupitchayan|SankyRed|udaypant|colifran|scanlonp|mikewrighton|moelasmar|paulhcsun|awsmjs|evgenyka|GavinZZ|aaythapa|xazhao|ConnorRobertson|ssenchenko|gracelu0|jfuss|SimonCMoore|shikha372|kirtishrinkhala|godwingrs22|bergjaak|samson-keung|IanKonlog|Leo10Gama|scorbiere|michelle-wangg)$
       - -label~="contribution/core"
   - name: automatic merge
     actions: