Upgrade libraries and fix tests

[mefellows]

• npm run dist works locally (this will run tests, lint and build)
• Commit messages are ready to go in the changelog (see below for details)
• PR template filled in (see below for details)

PR Template

This change updates to the latest TypeScript and fixes the remaining broken tests from recent dependabot and workflow changes.

[mefellows]

@JP-Ellis FYI have progressed a number of the issues in the rewrite. Looks like we're down to the examples now (see https://github.com/pact-foundation/pact-js/actions/runs/12690437753/job/35371328939)..

I suspect the error relates to the dist folder copy/pasting although that's just a guess. I've run out of time this week (off on leave tomorrow) but thought I'd give you the heads up on this change.

I can revisit next week.

[JP-Ellis]

Good news (?), I'm able to replicate the issue:

For some reason, deleting the root node_modules replicates the issue. That is:

1. Run npm run dist (having run npm ci already)
2. Remove the root node_modules
3. cd into one of the examples, and run npm ci && npm run test:consumer

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EDIT: Based on this finding, I have 'fixed' the CI by installing dependencies to the root package. This has uncovered just one final failure.