Update to jasmine >= 4

[guimard]

Hi,

for the record, here is a fix to update to jasmine >= 4 (used to publish configurable-http-proxy into Debian):

--- a/prom-client/test/metrics/eventLoopLagTest.js
+++ b/prom-client/test/metrics/eventLoopLagTest.js
@@ -12,11 +12,11 @@
                register.clear();
        });
   
-       it('should add metric to the registry', async done => {
+       it('should add metric to the registry', async () => {
                expect(await register.getMetricsAsJSON()).toHaveLength(0);
                eventLoopLag();
 
-               setTimeout(async () => {
+               setTimeout(async (done) => {
                        const metrics = await register.getMetricsAsJSON();
                        expect(metrics).toHaveLength(8);

Cheers,
Yadd

[consideRatio]

This is a fix for prom-client rather than this project, but we can bump to jasmine no matter what if we drop support for node 10 which is about time anyhow.

Thanks for the detailed fix suggestion, but should be done in prom-client I think. Bumping jasmine to 4 can be tracked in #402

Thank you @guimard!!