Bump mqtt-packet from 5.2.1 to 5.6.1 in /app

[dependabot[bot]]

Bumps mqtt-packet from 5.2.1 to 5.6.1.

Release notes

Sourced from mqtt-packet's releases.

v5.6.1

• fix malformed packet - 5.x #56

v5.6.0

• Add typescript typings #39

v5.5.0

• updated process-nextick-args mqttjs/mqtt-packet#35

v5.4.0

• Add option to enable/disable the numbers cache #29

v5.3.0

• Adopted safe-buffer #27 by @​mcollina

v5.2.2

• Maintenance #26 by @​wuhkuh

Commits

• 483b6d8 Bumped v6.1.2
• cfae33b Merge pull request #53 from mqttjs/fix-malformed-packet-6
• 2fdbf0f fix malformed packet
• c65b991 Bumped v6.1.1
• e6b6af1 Merge pull request #52 from mqttjs/multiple-user-properties-with-same-name
• a026a38 fix build in mqttjs
• c8e094b Bumped v6.1.0
• 27b9312 Merge pull request #51 from mqttjs/multiple-user-properties-with-same-name
• 21ebeea user properties with same names
• f513e33 Merge pull request #49 from mukeshydv/master
• Additional commits viewable in compare view

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