fix(windows): use absolute path to gradlew.bat on windows

[MikeDombo]

Issue #, if available: Closes #273

Description of changes:

• Updates the UATs which are failing due to changing the default zipname value in the templates.
• Fixes the UAT which verifies gradlew works which was not changing to use gradlew due to a typo.
• Fixes Windows gradlew.bat not working because of relative path

Why is this change necessary:

How was this change tested:

Any additional information or context required to review the change:

Checklist:

• [ ] Updated the README if applicable
• [ ] Updated or added new unit tests
• [ ] Updated or added new integration tests
• [ ] Updated or added new end-to-end tests
• [ ] If your code makes a remote network call, it was tested with a proxy
• [ ] You confirm that the change is backwards compatible

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (cfd3e10) 97.81% compared to head (3072387) 97.87%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #274 +/- ## ========================================== + Coverage 97.81% 97.87% +0.05% ========================================== Files 49 49 Lines 1926 1928 +2 ========================================== + Hits 1884 1887 +3 + Misses 42 41 -1 ``` | [Flag](https://app.codecov.io/gh/aws-greengrass/aws-greengrass-gdk-cli/pull/274/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aws-greengrass) | Coverage Δ | | |---|---|---| | [integ](https://app.codecov.io/gh/aws-greengrass/aws-greengrass-gdk-cli/pull/274/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aws-greengrass) | `80.96% <57.14%> (+0.01%)` | :arrow_up: | | [uat](https://app.codecov.io/gh/aws-greengrass/aws-greengrass-gdk-cli/pull/274/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aws-greengrass) | `71.42% <100.00%> (+0.18%)` | :arrow_up: | | [unit](https://app.codecov.io/gh/aws-greengrass/aws-greengrass-gdk-cli/pull/274/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aws-greengrass) | `93.82% <100.00%> (+<0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aws-greengrass#carryforward-flags-in-the-pull-request-comment) to find out more.

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