Bump flat and redis-json in /app/stateful/api-gateway

[dependabot]

Removes flat. It's no longer used after updating ancestor dependency redis-json. These dependencies need to be updated together.

Removes flat

Updates redis-json from 2.2.2 to 6.0.3

Changelog

Sourced from redis-json's changelog.

v6.0.2

• minor bug fixes and performance improvements

v6.0.1

• adds function overload definition for get as get(key: string): Promise<T|undefined>

v6.0.0

• improves efficiency by combining multiple commands into one multi command
• fixes code smells
• replace the entire array when an array is present in the set command
• removes all <set|del|rewrite|incr>T methods and integrates transaction within <set|del|rewrite|incr> method itself

v5.0.0

• supports empty string as pre-fixes

v4.3.0

• adds .incr() & .incrT() methods to allow incrementing of values using hincrbyfloat.

v4.2.1

• fixes #14, wherein when any prop was set(id, {}) on an empty object, it wasn't reflected when get() was called on it

v4.2.0

• adds support for transactions via setT, delT & rewriteT methods
• rewrite method now support expiry. Please check the API docs for more details

v4.1.0

• adds .del() method

v4.0.1

• clearAll() now scans the DB via scan command(with a COUNT 100), instead of getting all the prefixed keys via keys command which would block the DB if the list is huge
• Now allows fetching of internal fields as well -> jsonCache.get('test', 'name', 'address', 'cars.0')
• Improves documentation
• fixes a bug, if the key contains '/.' in it, then it was being misinterpreted during retrieval of data from DB
• adds more test cases for robustness
• seggregates test cases for better readability

v4.0.0

• Total rewrite of the library for better maintenance and performance improvement
• Provides extension for custom types, which allows the users to defines how the custom object has to be stored in Redis and how to revive the same back from redis
• Now provide type support, which means that the type of data use save in jsonCache is exactly(===) the same that you get back

v3.2.1

• Now supports redis client
• Improves efficiency by replacing .call with .bind while initializing internal redisClient
• fixes #7
• removes the support for browsers (I know it was stupid for this library 😭)

v3.2.0

• Now supports .(Dot) in object property (Ex. {'a.b': 'c'})

... (truncated)

Commits

• d3433ea 6.0.3
• 32ac9ab Merge pull request #29 from subasshrestha/subas/bugFix
• a72697a Add test case
• c62f4fb Fix hex string as key
• 794bc87 6.0.2
• d3c9640 adds changelog for 6.0.2
• 1a54796 fixes #28
• 438676a adds test case for empty array at the root
• c5a5ef5 6.0.1
• ebdec95 adds function overload definition for jsonCache.get
• Additional commits viewable in compare view

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