Documentation needs to be clear that we do not support IE 9,10,11 as of v7.0.0 mdm-ui

[olliefreeman]

We have updated to Angular 12
support for IE 9 & 10 was removed in Angular 11 and support for IE 11 was removed angular 12

Documentation needs to be clear on this

according to npx browserslist with support for ie9,10,11 explicitly removed this is the list of supported browsers

and_chr 95
and_ff 92
and_qq 10.4
and_uc 12.12
android 95
baidu 7.12
chrome 95
chrome 94
chrome 93
chrome 92
edge 95
edge 94
firefox 94
firefox 93
firefox 92
firefox 91
firefox 78
ios_saf 15
ios_saf 14.5-14.8
ios_saf 14.0-14.4
ios_saf 12.2-12.5
kaios 2.5
op_mini all
op_mob 64
opera 81
opera 80
opera 79
safari 15
safari 14.1
safari 13.1
samsung 15.0
samsung 14.0

if we want to alter this then https://github.com/browserslist/browserslist#queries can be used to update the set

defaults
##> 0.5%
##last 2 versions
##Firefox ESR
##not dead
not ie <= 11