Bump maatwebsite/excel from 3.1.27 to 3.1.28

Created by: dependabot[bot]

Bumps maatwebsite/excel from 3.1.27 to 3.1.28.

Release notes

Sourced from maatwebsite/excel's releases.

v3.1.28

https://github.com/Maatwebsite/Laravel-Excel/blob/3.1/CHANGELOG.md#3128---2020-03-10

Changelog

Sourced from maatwebsite/excel's changelog.

[3.1.28] - 2020-03-10

Added

• Added WithUpsertColumns concern (#3046)
• Added ShouldQueueWithoutChain concern (#3072)

Fixed

• Limit Phpspreadsheet version to 1.16 until bugfix release
• Fixed issue with not autosizing columns (#3055)
• Fix selecting worksheets by name with chunk reading (#3052)

Commits

• 71f2743 Update CHANGELOG.md
• 4a040cc Update CHANGELOG.md
• 98f5095 Restrict phpspreadsheet version to 1.16
• 0b9553b Limit phpspreadsheet to lower version until bugfix released
• f8710d1 Apply fixes from StyleCI
• 6dc9f79 Fix selecting worksheets by name with chunk reading: #3051 (#3052)
• f123176 Queued Import Chunks Without Job Chaining (#3072)
• f4e0a5b Update CHANGELOG.md
• 57d4ecc Define upsert columns (#3046)
• e77082c Remove strict check on column dimension width to dertmine if should autosize ...
• Additional commits viewable in compare view

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