[Feature request]: Spark version 3.4.0

[eruizalo]

Feature suggestion Spark 3.4.0 has been released. We should:

• [x] Update sbt to be this version the default version #346
• [x] Update CI #346
• [x] Update docs #346
• [ ] Add new type Timestamp without timezone
• [ ] Add new sql functions:
  • From functions
    • [ ] def mode(e: Column): Column
    • [ ] def median(e: Column): Column
    • [ ] def window_time(windowColumn: Column): Column
    • [ ] def array_append(column: Column, element: Any): Column
    • [ ] def get(column: Column, index: Column): Column
    • [x] def array_sort(e: Column, comparator: (Column, Column) => Column): Column #275
    • [ ] def array_compact(column: Column): Column
    • [ ] def array_insert(arr: Column, pos: Column, value: Column): Column
    • [ ] def inline(e: Column): Column
    • [ ] def inline_outer(e: Column): Column
    • [ ] def unwrap_udt(column: Column): Column
  • From column
    • It seems no new column functions were added
• [x] Close #344 as "won't do" and relate this PR with the new one

Take a look at #307 or #323 if you need help, as it seems to be very similar

Current behaviour

N/A