[github-actions] migrate from macos-12 to macos-14

[jwhui]

No description provided.

[size-report]

Size Report of OpenThread

Merging #10751 into main(c182933).

name	branch	text	data	bss	total
ot-cli-ftd	main	469640	856	66636	537132
	#10751	469640	856	66636	537132
	+/-	0	0	0	0
ot-ncp-ftd	main	438308	760	61864	500932
	#10751	438308	760	61864	500932
	+/-	0	0	0	0
libopenthread-ftd.a	main	237882	95	40422	278399
	#10751	237882	95	40422	278399
	+/-	0	0	0	0
libopenthread-cli-ftd.a	main	58704	0	8075	66779
	#10751	58704	0	8075	66779
	+/-	0	0	0	0
libopenthread-ncp-ftd.a	main	32605	0	5924	38529
	#10751	32605	0	5924	38529
	+/-	0	0	0	0
ot-cli-mtd	main	366560	760	51444	418764
	#10751	366560	760	51444	418764
	+/-	0	0	0	0
ot-ncp-mtd	main	349276	760	46688	396724
	#10751	349276	760	46688	396724
	+/-	0	0	0	0
libopenthread-mtd.a	main	160035	0	25246	185281
	#10751	160035	0	25246	185281
	+/-	0	0	0	0
libopenthread-cli-mtd.a	main	39795	0	8059	47854
	#10751	39795	0	8059	47854
	+/-	0	0	0	0
libopenthread-ncp-mtd.a	main	25413	0	5924	31337
	#10751	25413	0	5924	31337
	+/-	0	0	0	0
ot-cli-ftd-br	main	554808	864	131500	687172
	#10751	554808	864	131500	687172
	+/-	0	0	0	0
libopenthread-ftd-br.a	main	327086	100	105262	432448
	#10751	327086	100	105262	432448
	+/-	0	0	0	0
libopenthread-cli-ftd-br.a	main	72832	0	8099	80931
	#10751	72832	0	8099	80931
	+/-	0	0	0	0
ot-rcp	main	62688	564	20788	84040
	#10751	62688	564	20788	84040
	+/-	0	0	0	0
libopenthread-rcp.a	main	9750	0	5060	14810
	#10751	9750	0	5060	14810
	+/-	0	0	0	0
libopenthread-radio.a	main	19260	0	222	19482
	#10751	19260	0	222	19482
	+/-	0	0	0	0

[abtink]

LGTM.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.41%. Comparing base (c182933) to head (131e35e).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10751      +/-   ##
==========================================
- Coverage   73.95%   65.41%   -8.54%     
==========================================
  Files         580      606      +26     
  Lines       83247   105122   +21875     
==========================================
+ Hits        61563    68767    +7204     
- Misses      21684    36355   +14671     

see 295 files with indirect coverage changes