Unpin ts-node.

[pmconne]

#3832 pinned ts-node to 10.8.0 because a bug in 10.8.1 broke nyc.
It is fixed in 10.8.2.

[pmconne]

@grigasp @saskliutas @roluk fyi this test failed on macOS -- I will rerun to see if it's just flaky.
UPDATE: nope, failed again. I guess I'll try to figure out what the problem is.

--[ FAILURE: presentation-full-stack-tests ]-------[ 4 minutes 55.0 seconds ]--


  323 passing (2m)
  1 failing

  1) ReadWrite
       Handling read-write operations
         handles schema import during nodes request:

      AssertionError: expected +0 to equal 85
      + expected - actual

      -0
      +85
      
      at Context.<anonymous> (src/backend/ReadWrite.test.ts:77:31)

[grigasp]

@grigasp @saskliutas @roluk fyi this test failed on macOS -- I will rerun to see if it's just flaky. UPDATE: nope, failed again. I guess I'll try to figure out what the problem is.

--[ FAILURE: presentation-full-stack-tests ]-------[ 4 minutes 55.0 seconds ]--


  323 passing (2m)
  1 failing

  1) ReadWrite
       Handling read-write operations
         handles schema import during nodes request:

      AssertionError: expected +0 to equal 85
      + expected - actual

      -0
      +85
      
      at Context.<anonymous> (src/backend/ReadWrite.test.ts:77:31)

We're tracking the issue with https://github.com/iTwin/itwinjs-backlog/issues/247. @saskliutas already has a fix.