Create editExerciseComment mutation and update some snapshots for tests

[HS-90]

Description: relates to #2400

This PR adds a graphQL mutation that will handle editing of exercise comments as part of the discussions feature in C0D3 Dojo.
To test:
Use an existing exerciseComment id or create a new one in graphQL like so:

1. Go to 'api/graphql'
2. write a query as follows:

mutation AddExerciseComment{   
       addExerciseComment(exerciseId:1, content:"Cool")
             { id 
              exerciseId 
              content   } 
}

3. You should receive a response such as:

{   "data": {
        "addExerciseComment": { 
            "id": 3, 
            "exerciseId": 1, 
            "content": "Cool" }   
                  }
 }

4. Remember/save the id that is generated/assigned to the newly created exerciseComment

5. Use this id to run a query such as:

mutation EditExerciseComment{   
       editExerciseComment( id: 3, content: "I edited this comment")
             { id 
              createdAt
              exerciseId
              parentId
              content   } 
}

If successful, there should be a result similar to the following:

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Name	Status	Preview	Comments	Updated
c0d3-app	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Feb 1, 2023 at 8:56AM (UTC)

[flacial]

It shouldn't update any snapshots because they were updated and merged in this PR. Did you merge upstream changes and update the packages?

[flacial]

It would be nice to include the date too. So in the app, we can show when was the comment last edited

[HS-90]

@flacial Actually, I though prisma updates that automatically in the "updatedAt" field. If that's the case we wont need to manually update the time right?

[flacial]

You're right.

[flacial]

Can't we wrap this with WithUserContainer higher order function because it checks if the user session exists?

[HS-90]

It shouldn't update any snapshots because they were updated and merged in this PR. Did you merge upstream changes and update the packages?

I did update my fork and did 'git pull' in my local repo before submitting this PR. I had to update the snapshots in my local with 'yarn test -u' otherwise the snapshots failed. I'll have to look further into why it's failing the test.

[codecov]

Codecov Report

Merging #2731 (39e003e) into master (7cec79a) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master     #2731   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          189       189           
  Lines         3555      3562    +7     
  Branches       984       985    +1     
=========================================
+ Hits          3555      3562    +7     

Impacted Files	Coverage Δ
graphql/resolvers/exerciseCommentCrud.ts	100.00% <100.00%> (ø)

[anthonykhoa]

Thanks for the detailed test instructions. LGTM! 👍