chore: pin dependencies

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
async-stream	dependencies	pin	0.3.2 -> =0.3.2
clap	dependencies	pin	3.0.14 -> =3.0.14
color-eyre	dependencies	pin	0.6.0 -> =0.6.0
enet-client	dependencies	pin	0.2.1 -> =0.2.1
eventuals	dependencies	pin	0.6.6 -> =0.6.6
futures (source)	dependencies	pin	0.3.21 -> =0.3.21
lazy_static	dependencies	pin	1.4.0 -> =1.4.0
matchit	dependencies	pin	0.4.6 -> =0.4.6
paho-mqtt	dependencies	pin	0.10.0 -> =0.10.0
serde (source)	dependencies	pin	1.0.136 -> =1.0.136
serde_json	dependencies	pin	1.0.79 -> =1.0.79
serde_test	dev-dependencies	pin	1.0.136 -> =1.0.136
tokio (source)	dependencies	pin	1.17.0 -> =1.17.0

Add the preset :preserveSemverRanges to your config if you don't want to pin your dependencies.

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