Expand Falcon supported version to v4

Falcon v4 has a mostly identical interface to v3, and is proved to be fully compatible with `opentelemetry-instrumentation-falcon`. Loose the version check to `<5.0.0` to avoid false `DependencyConflict` alarm.

Author: stevapple

instrumentation/opentelemetry-instrumentation-falcon/src/opentelemetry/instrumentation/falcon/package.py

@@ -13,6 +13,6 @@
 # limitations under the License.
 
 
-_instruments = ("falcon >= 1.4.1, < 4.0.0",)
+_instruments = ("falcon >= 1.4.1, < 5.0.0",)
 
 _supports_metrics = True