Fix Private endpoint with static IP - change the private_endpoint member name to "default"

[ahmedig]

Description

This pull request includes a change to the main.private_endpoint.tf file. The change modifies the member_name from "vault" to "default" in the resource "azurerm_private_endpoint" "this" block. This is to address the bug#108.

Type of Change

• [ ] Non-module change (e.g. CI/CD, documentation, etc.)
• [ ] Azure Verified Module updates:
  • [ ] Bugfix containing backwards compatible bug fixes, and I have NOT bumped the MAJOR or MINOR version in locals.version.tf.json:
  • [ ] Someone has opened a bug report issue, and I have included "Closes #{bug_report_issue_number}" in the PR description.
  • [ ] The bug was found by the module author, and no one has opened an issue to report it yet.
  • [ ] Feature update backwards compatible feature updates, and I have bumped the MINOR version in locals.version.tf.json.
  • [ ] Breaking changes and I have bumped the MAJOR version in locals.version.tf.json.
  • [ ] Update to documentation

Checklist

• [ ] I'm sure there are no other open Pull Requests for the same update/change
• [ ] My corresponding pipelines / checks run clean and green without any errors or warnings
• [ ] I did run all pre-commit checks

[microsoft-github-policy-service[bot]]

[!IMPORTANT] The "Needs: Triage :mag:" label must be removed once the triage process is complete!

[!NOTE] This label was added as per ITA06.

[matt-FFFFFF]

thanks for this PR - closing as incorporated in #113