Bump next from 15.0.2 to 15.4.8 in /examples/blog-starter #120

Job	Run time
deploy-target	17s
publish-turbopack-npm-packages	0s
build	2m 26s
build-wasm (web)	1s
build-wasm (nodejs)	1d 0h 0m 1s
stable - x86_64-unknown-linux-gnu - node@16	1s
Deploy examples	0s
thank you, build	2s
Potentially publish release	0s
Deploy preview tarball	0s
Upload Turbopack Bytesize metrics to Datadog	0s
Release Stats	0s
	1d 0h 2m 48s

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