Pin tokio to 1.20.1 to fix CI

[hamza1311]

Description

This is a temporary work around for tokio-rs/tokio#4973

Checklist

• I have reviewed my own code
• I have added tests

[github-actions]

Visit the preview URL for this PR (updated for commit ce09802):

https://yew-rs-api--pr2866-pin-to-working-tokio-mhstz0tw.web.app

_{(expires Sat, 17 Sep 2022 20:40:33 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

[github-actions]

Size Comparison

examples	master (KB)	pull request (KB)	diff (KB)	diff (%)
boids	170.268	N/A	N/A	N/A
contexts	107.848	N/A	N/A	N/A
counter	85.501	N/A	N/A	N/A
counter_functional	86.031	N/A	N/A	N/A
dyn_create_destroy_apps	88.399	N/A	N/A	N/A
file_upload	100.081	N/A	N/A	N/A
function_memory_game	163.805	N/A	N/A	N/A
function_router	348.476	N/A	N/A	N/A
function_todomvc	158.626	N/A	N/A	N/A
futures	222.372	N/A	N/A	N/A
game_of_life	105.767	N/A	N/A	N/A
immutable	181.604	N/A	N/A	N/A
inner_html	82.369	N/A	N/A	N/A
js_callback	111.374	N/A	N/A	N/A
keyed_list	195.569	N/A	N/A	N/A
mount_point	85.121	N/A	N/A	N/A
nested_list	112.598	N/A	N/A	N/A
node_refs	92.854	N/A	N/A	N/A
password_strength	1549.015	N/A	N/A	N/A
portals	96.283	N/A	N/A	N/A
router	318.140	N/A	N/A	N/A
simple_ssr	152.177	N/A	N/A	N/A
ssr_router	394.047	N/A	N/A	N/A
suspense	109.166	N/A	N/A	N/A
timer	88.343	N/A	N/A	N/A
todomvc	139.743	N/A	N/A	N/A
two_apps	86.114	N/A	N/A	N/A
web_worker_fib	152.228	N/A	N/A	N/A
webgl	84.835	N/A	N/A	N/A

✅ None of the examples has changed their size significantly.

[github-actions]

Benchmark - SSR

Yew Master

Benchmark	Round	Min (ms)	Max (ms)	Mean (ms)	Standard Deviation
Baseline	10	345.431	346.377	345.922	0.344
Hello World	10	619.933	628.781	620.995	2.741
Function Router	10	2286.893	2301.689	2292.088	4.159
Concurrent Task	10	1008.159	1009.803	1009.066	0.480

Pull Request

Benchmark	Round	Min (ms)	Max (ms)	Mean (ms)	Standard Deviation
Baseline	10	353.412	356.072	354.643	0.928
Hello World	10	621.792	624.364	622.958	1.098
Function Router	10	2292.341	2310.624	2303.053	4.715
Concurrent Task	10	1007.690	1009.483	1008.639	0.581

[Darksonn]

This should have been fixed in v1.21.1.