Roll engine 6675f71dfb22..f7b4903d7c99 (2 commits) (#30393)

https://github.com/flutter/engine/compare/6675f71dfb22...f7b4903d7c99

git log 6675f71dfb22a0b4fdab6332e37843f78c33c9e6..f7b4903d7c9913447af3aaebc4308d1a1e2a4dde --no-merges --oneline
f7b4903d7 Revert "Separate the data required to bootstrap the VM into its own class. (#8397)" (flutter/engine#8406)
f835789dd Roll src/third_party/skia d962070feb84..70d8f4f3acbb (1 commits) (flutter/engine#8405)

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bin/internal/engine.version

-6675f71dfb22a0b4fdab6332e37843f78c33c9e6
+f7b4903d7c9913447af3aaebc4308d1a1e2a4dde