fix: defer reading of database configuration until needed to fix race

[kriswest]

resolves #1313
supercedes #1314

By deferring the setup of the database adaptors until they are first used, we can defer the retrieval of the DB config allowing the user configuration to be loaded before we attempt to use it.

[netlify]

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[codecov]

Codecov Report

❌ Patch coverage is 84.81013% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.69%. Comparing base (5d1a727) to head (bb8d97a).
⚠️ Report is 19 commits behind head on main.

Files with missing lines	Patch %	Lines
src/db/mongo/helper.ts	0.00%	6 Missing ⚠️
src/db/index.ts	91.37%	5 Missing ⚠️
src/db/file/helper.ts	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1316      +/-   ##
==========================================
- Coverage   80.88%   80.69%   -0.20%     
==========================================
  Files          65       65              
  Lines        4546     4568      +22     
  Branches      777      776       -1     
==========================================
+ Hits         3677     3686       +9     
- Misses        854      867      +13     
  Partials       15       15              

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[kriswest]

@jescalada I ended up fixing a bunch of tests in this PR that seemed to be missing the Commit type (in favour of one of the CommitData types).

[coopernetes]

A few minor suggested changes. The bulk of these changes LGTM.

[jescalada]

LGTM! 🚀

I did some testing with the skipped tests just in case, but I'm still getting some mysterious errors with the testPush.test.ts file:

Details

 FAIL  test/testPush.test.ts > Push API > test push API > should allow an authorizer to approve a push
AssertionError: expected 401 to be 200 // Object.is equality

- Expected
+ Received

- 200
+ 401

 ❯ test/testPush.test.ts:158:26
    156|           },
    157|         });
    158|       expect(res.status).toBe(200);
       |                          ^
    159|     });
    160| 

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 FAIL  test/testPush.test.ts > Push API > should allow an authorizer to reject a push
AssertionError: expected 401 to be 200 // Object.is equality

- Expected
+ Received

- 200
+ 401

 ❯ test/testPush.test.ts:272:24
    270|       .post(`/api/v1/push/${TEST_PUSH.id}/reject`)
    271|       .set('Cookie', `${cookie}`);
    272|     expect(res.status).toBe(200);
       |                        ^
    273|   });
    274| 

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 FAIL  test/testPush.test.ts > Push API > should allow a committer to cancel a push
AssertionError: expected 401 to be 200 // Object.is equality

- Expected
+ Received

- 200
+ 401

 ❯ test/testPush.test.ts:316:24
    314|       .post(`/api/v1/push/${TEST_PUSH.id}/cancel`)
    315|       .set('Cookie', `${cookie}`);
    316|     expect(res.status).toBe(200);
       |                        ^
    317| 
    318|     const pushes = await request(app).get('/api/v1/push').set('Cookie', `${cookie…

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 Test Files  1 failed | 45 passed (46)
      Tests  3 failed | 536 passed (539)

Would be great to have some more clues on this!