Bump wyrihaximus/ticking-promise from 1.6.3 to 2.1.0

Bumps [wyrihaximus/ticking-promise](https://github.com/WyriHaximus/TickingPromise) from 1.6.3 to 2.1.0.
- [Release notes](https://github.com/WyriHaximus/TickingPromise/releases)
- [Commits](WyriHaximus/TickingPromise@1.6.3...2.1.0)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

composer.json

@@ -19,7 +19,7 @@
         "react/event-loop": "^1.1",
         "react/promise": "^2.7",
         "wyrihaximus/pool-info": "^1.0",
-        "wyrihaximus/ticking-promise": "^1.6"
+        "wyrihaximus/ticking-promise": "^1.6 || ^2.0"
     },
     "require-dev": {
         "moneyphp/money": "^3.2 || ^3.2.1",