fix: pin host in CI to use ubuntu 22.04

Rename price store env var and bump version (#315)

* chore: rename variable for pyth store pid

* chore: bump pythnet version to 1.14.179

chore: bump

fix: use sed instead of gsed

chore: bump pythnet version to 1.14.176

Aggregation v2 (#296)

* feat: accumulator v2 (wip 1)

* feat: accumulator v2 (wip 2)

* chore: fix some warnings and fix validator build

* feat: accumulator v2 (wip 3)

* feat: skip message buffer aggregation if all price feeds use v2 aggregation

* feat: combine v1 and v2 aggregation price feed messages in the merkle tree

* refactor: clean up and avoid extra vector

* fix: don't aggregate if already aggregated in the program

* test: bring back old pyth tests (wip)

* test: fix old pyth tests

* test: add initial v2 tests to validator

* refactor: unify env var handling

* chore: fix build for stable Rust by ignoring lints

* test: fix and expand accumulator-v2 tests

* chore: clean up comments

* chore: update dependency

* chore: fix clippy and fmt

* test: add extra check

* chore: bump version to 1.14.175

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Co-authored-by: Reisen <[email protected]>

chore: bump version

chore: bump version