[BUG] Port runner tests to Windows

[prasadtalasila]

Describe the bug

The runner tests are failing on Windows OS when tested on github actions

To Reproduce

Steps to reproduce the behavior:

1. Go to './github/workflows/runner.yml'
2. Replace line-18 (runs-on: ubuntu-latest) with lines-18 to 21 of lib-ms.yml

   strategy:
     matrix:
       os: [windows-latest, ubuntu-latest]
   runs-on: ${{ matrix.os }}

3. Check the Github actions of runner

4. See error for windows-latest

   FAIL test/unit/util.spec.ts
   Check utils library
   × Should correctly resolve absolute path (6 ms)
   
   ● Check utils library › Should correctly resolve absolute path
   
   expect(received).toEqual(expected) // deep equality
   
   Expected: "C:Usersdtaas"
   Received: "C:\\Usersdtaas"
   
      8 |       // prettier-ignore
      9 |       // eslint-disable-next-line no-useless-escape
   > 10 |       expect(resolveFile('C:\Users\dtaas')).toEqual('C:\Users\dtaas');
        |                                             ^
     11 |     } else {
     12 |       expect(resolveFile('/opt/dtaas')).toEqual('/opt/dtaas');
     13 |     }
   
     at Object.<anonymous> (test/unit/util.spec.ts:10:45)

Expected behavior

Github action is successful for windows as well.