docs: release notes for the v11.2.12 release
docs: release notes for the v11.2.12 release

brandonroberts/angular,manekinekko/angular,ocombe/angular,mgechev/angular,shairez/angular,brandonroberts/angular,JiaLiPassion/angular,gkalpak/angular,angular/angular,gkalpak/angular,gnomeontherun/angular,gnomeontherun/angular,gkalpak/angular,ocombe/angular,angular/angular,JiaLiPassion/angular,mgechev/angular,gnomeontherun/angular,angular/angular,ocombe/angular,manekinekko/angular,angular-indonesia/angular,manekinekko/angular,brandonroberts/angular,angular-indonesia/angular,brandonroberts/angular,mgechev/angular,ocombe/angular,brandonroberts/angular,mgechev/angular,mgechev/angular,shairez/angular,manekinekko/angular,angular-indonesia/angular,gnomeontherun/angular,angular/angular,shairez/angular,manekinekko/angular,brandonroberts/angular,gkalpak/angular,JiaLiPassion/angular,manekinekko/angular,JiaLiPassion/angular,shairez/angular,ocombe/angular,ocombe/angular,angular-indonesia/angular,shairez/angular