Update angular monorepo to v12.1.5

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@angular/common	12.1.4 -> 12.1.5
@angular/compiler	12.1.4 -> 12.1.5
@angular/compiler-cli	12.1.4 -> 12.1.5

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Release Notes

angular/angular

v12.1.5

Compare Source

12.1.5 (2021-08-04)

compiler

Commit	Description
82ca69d	fix(compiler): include leading whitespace in source-spans of i18n messages (#​42062)

Special Thanks:

Alex Rickabaugh, George Kalpakas, Joe Martin, Joey Perrott, Nichola Alkhouri, Paul Gschwendtner, Pete Bacon Darwin, atscott and dario-piotrowicz

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