Use latest chrome in Blazor benchmarks

[pranavkm]

This bumps Chrome to v86 (while also pointing to latest). There's a bunch of improvements in my local runs just from doing this.

Scenario	Description	Before (ms)	After (ms)	Percent change
blazorwasm/time-to-first-ui	Time to first UI	595.775	422.455	29%
blazorwasm/render-10-items	Render 10 items	5.09221519	4.094540816	20%
blazorwasm/render-100-items	Render 100 items	23.1125	18.47136364	20%
blazorwasm/render-1000-items	Render 1000 items	204.9375	165.7416667	19%
blazorwasm/jsonserialize-1kb	Serialize 1kb	2.995447761	2.323583815	22%
blazorwasm/jsonserialize-340kb	Serialize 340kb	239.28	184.535	23%
blazorwasm/jsondeserialize-1kb	Deserialize 1kb	4.507303371	3.461594828	23%
blazorwasm/jsondeserialize-340kb	Deserialize 340kb	661.65	495.43	25%
blazorwasm/jsonserialize-javascript-340kb	Serialize 340kb (JavaScript)	1.081310811	1.122927171	4%
blazorwasm/jsondeserialize-javascript-340kb	Deserialize 340kb (JavaScript)	1.532681992	1.200523952	22%
blazorwasm/orgchart-1-4-org	Render small nested component	30.81214286	24.66529412	20%
blazorwasm/orgchart-3-3-org	Render large nested component	220.44	179.24	19%
blazorwasm/edit-orgchart-3-2	Render component with edit	97.418	66.20285714	32%
blazorwasm/render-plaintable-from-blank	PlainTable: From blank	464.39	373.2925	20%
blazorwasm/render-plaintable-switch-pages	PlainTable: Switch pages	295.4	226.7725	23%
blazorwasm/render-complextable-from-blank	ComplexTable: From blank	796.76	627.625	21%
blazorwasm/render-complextable-switch-pages	ComplexTable: Switch pages	883.275	671.13	24%
blazorwasm/render-fastgrid-from-blank	FastGrid: From blank	96.632	79.75916667	17%
blazorwasm/render-fastgrid-switch-pages	FastGrid: Switch pages	80.234	65.31571428	19%

Our benchmarks targets the master branch, which is why this is change is targeted at that branch. FYI @BrzVlad

[HaoK]

Nice!

[captainsafia]

Looks good!