test: update priority in route to 2^46 - 1

[randmonkey]

Since Kong gateway will limit the priority in routes to be less than 2^46 (in [0,2^46-1]) , the priorityof route used in tests should be updated to be in the interval.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.42%. Comparing base (2c2b379) to head (722306c).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #444   +/-   ##
=======================================
  Coverage   59.42%   59.42%           
=======================================
  Files          71       71           
  Lines        4394     4394           
=======================================
  Hits         2611     2611           
  Misses       1171     1171           
  Partials      612      612           

Flag	Coverage Δ
2.1	35.75% <ø> (ø)
2.2	48.31% <ø> (ø)
2.3	48.95% <ø> (ø)
2.4	48.99% <ø> (ø)
2.5	48.99% <ø> (ø)
2.6	48.99% <ø> (ø)
2.7	50.70% <ø> (ø)
2.8	50.70% <ø> (ø)
3.0	54.18% <ø> (-0.46%)	⬇️
3.1	56.28% <ø> (ø)
3.2	56.32% <ø> (ø)
3.3	56.32% <ø> (ø)
3.4	58.71% <ø> (ø)
3.5	56.50% <ø> (ø)
3.6	56.50% <ø> (ø)
community	43.42% <ø> (ø)
enterprise	58.71% <ø> (+0.68%)	⬆️
integration	59.42% <ø> (ø)

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