Updated the `CHANGELOG` file to include the remaining changes made in milestone `3.14.0`. #2909

Job	Run time
Automated tests for PlayStore variant (25)	10m 46s
Automated tests for PlayStore variant (30)	11m 43s
Automated tests (25)	32m 25s
Automated tests for Custom app (25)	10m 28s
Automated tests for PlayStore variant (33)	11m 18s
Automated tests (30)	44m 8s
Automated tests for Custom app (30)	10m 46s
Automated tests for PlayStore variant (34)	11m 29s
Automated tests (33)	1h 5m 35s
Automated tests for Custom app (33)	10m 57s
Automated tests for PlayStore variant (35)	12m 48s
Automated tests (34)	1h 13m 55s
Automated tests for Custom app (34)	10m 45s
Automated tests (35)	1h 7m 53s
Automated tests for Custom app (35)	16m 30s
Automated tests on Tablet (25)	8m 39s
Automated tests on Tablet (30)	11m 16s
Automated tests on Tablet (33)	7m 59s
Automated tests on Tablet (34)	7m 54s
Automated tests on Tablet (35)	9m 48s
	7h 27m 2s

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