Pull requests created outside the Laserfiche repository fail checks

[daniel-derzsi-codespring]

Currently, pull requests created from external repositories fail because GitHub does not share the repository secrets with external repositories.

Example:
https://github.com/Laserfiche/lf-api-js/actions/runs/22569353621/job/65373051863

FAIL lib/HttpHandlers/OAuthClientCredentialsHandler.test.ts
  ● Test suite failed to run

    Unable to load SERVICE_PRINCIPAL_KEY from .env

      10 |   process.env.SERVICE_PRINCIPAL_KEY ?? '';
      11 | if (!envServicePrincipalKey) {
    > 12 |   throw new Error(`Unable to load SERVICE_PRINCIPAL_KEY from .env`);
         |         ^
      13 | }
      14 | let accessKeyBase64: string = process.env.ACCESS_KEY ?? '';
      15 | if (!accessKeyBase64) {

      at ../testHelpers/cloudTestHelpers.ts:12:9

[daniel-derzsi-codespring]

PR #36 was merged as a stop-gap to solve this issue for now. However, it's possible to merge a PR that has not had its integration tests run.