Use same timestamp for attachments as for error

[MikhailSuendukov]

• [x] Has CHANGELOG.md been updated?
• [ ] Are tests passing locally?
• [x] Are the files formatted correctly?
• [ ] Did you add unit tests?
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• [ ] Did you check UI tests on the sample app? They are not executed on CI.

Description

This fix ensures that the timestamp used for minidump attachments is now synchronized with the crash log's timestamp.

Related PRs or issues

AB#102585

[coveralls]

coverage: 100.0%. remained the same when pulling 3d49161be644de2fca981338ee9c66c2cdf7381b on attachments-timestamp-fix into 1a47a87ea13cb90dd99e0b96d9f655097e79d932 on develop.