Update Dropbox definition to include sync_history.db

[sydp]

Add database file procesed by plaso parser (ref: https://github.com/log2timeline/plaso/pull/4052)

[joachimmetz]

@sydp FYI the validation test is failing please check the definition:

======================================================================
FAIL: testArtifactDefinitionsValidator (validator_test.ArtifactDefinitionsValidatorTest)
Runs the validator over all the YAML artifact definitions files.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\projects\artifacts\tests\validator_test.py", line 24, in testArtifactDefinitionsValidator
    self.assertTrue(
AssertionError: False is not true : in definitions file: data\cloud_services.yaml

[codecov[bot]]

Codecov Report

Merging #466 (5b4ec91) into main (f508846) will decrease coverage by 1.45%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #466      +/-   ##
==========================================
- Coverage   91.92%   90.47%   -1.46%     
==========================================
  Files           7        7              
  Lines         446      462      +16     
==========================================
+ Hits          410      418       +8     
- Misses         36       44       +8     

Impacted Files	Coverage Δ
artifacts/registry.py	79.74% <0.00%> (-7.35%)	:arrow_down:
artifacts/source_type.py	91.25% <0.00%> (-0.06%)	:arrow_down:
artifacts/reader.py	90.07% <0.00%> (ø)
artifacts/writer.py	100.00% <0.00%> (ø)
artifacts/definitions.py	100.00% <0.00%> (ø)
artifacts/artifact.py	97.87% <0.00%> (+0.09%)	:arrow_up:

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