[Bug][Datasource] datsource other param check error

[geosmart]

when add a mysql datasource, I wan't to set connec param with serverTimezone=Asia/Shanghai

so add other param with json format {"serverTimezone":"Asia/Shanghai"}

but the check rule make the param not working.

the Pattern PARAMS_PATTER = Pattern.compile("^[a-zA-Z0-9]+$"); make '/' illegal.

[github-actions]

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[CalvinKirs]

Can you submit a PR? The scope of regular filtering can be appropriately relaxed.

[zhuangchong]

@geosmart
Can you submit a PR?

[geosmart]

ok,I will fix it in this week