test(connlib): reduce cycles of resource_management test (#5807)

With the performance improvements of `tunnel_test` in #5786, the
`resource_management` test is now in the hot-path of CI runtime. We
reduce the cycles to 50 should cut down overall CI time by ~ 1 minute as
the Windows builds are among the slowest.

Signed-off-by: Reactor Scram <ReactorScram@users.noreply.github.com>
Co-authored-by: Reactor Scram <ReactorScram@users.noreply.github.com>

rust/connlib/tunnel/src/device_channel/tun_windows.rs

@@ -344,8 +344,8 @@ mod tests {
     #[test]
     #[ignore = "Needs admin privileges"]
     fn resource_management() {
-        // Each cycle takes about half a second, so this will need over a minute to run.
-        for _ in 0..150 {
+        // Each cycle takes about half a second, so this will take a fair bit to run.
+        for _ in 0..50 {
             let _tun = Tun::new().unwrap(); // This will panic if we don't correctly clean-up the wintun interface.
         }
     }