Fix large literals type inference on 32 bits

[jrisc]

Some tests are failing because some large literal integers are meant to be stored on 64 bits, but are stored on 32 on 32 bits architectures. This causes the value to overflow:

# github.com/goccy/go-yaml_test [github.com/goccy/go-yaml.test]
./decode_test.go:92:32: cannot use -9223372036854775808 (untyped int constant) as int value in map literal (overflows)
./decode_test.go:112:24: cannot use 4294967296 (untyped int constant) as int value in map literal (overflows)
./encode_test.go:68:24: cannot use 4294967296 (untyped int constant) as int value in map literal (overflows)

This commit fixes this issue by using explicit int64 typing.

[goccy]

Could you fix it with a type cast without using temporary variables ?

[codecov-commenter]

Codecov Report

Merging #293 (b4fe0c2) into master (e4f32a2) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #293   +/-   ##
=======================================
  Coverage   75.93%   75.93%           
=======================================
  Files          13       13           
  Lines        4305     4305           
=======================================
  Hits         3269     3269           
  Misses        799      799           
  Partials      237      237           

[goccy]

Could you fix it with a type cast without using temporary variables ?

[jrisc]

Sorry about the delay. I replaced variables by type casts.

[goccy]

Thank you for the fixing ! Merged