Revert hyper and tonic updates

[arpad-m]

Slimmer version of #9262. Only reverts #9234.

There were some errors in staging (PS side):

wal_connection_manager{tenant_id=AAAA shard_id=0000 timeline_id=BBBB}: Attempt #1, failed to subscribe for timeline AAAA/BBBB updates in broker: status: Unavailable, message: "h2 protocol error: http2 error", details: [], metadata: MetadataMap { headers: {} }

SK side errors:

WARN broker: push task failed: status: Unknown, message: "transport error", details: [], metadata: MetadataMap { headers: {} }
Caused by:
    0: transport error
    1: connection error
    2: stream closed because of a broken pipe

WARN broker: discover task failed: status: Unknown, message: "h2 protocol error: error reading a body from connection", details: [], metadata: MetadataMap { headers: {} }
Caused by:
    0: error reading a body from connection
    1: stream closed because of a broken pipe

[github-actions]

5058 tests run: 4872 passed, 0 failed, 186 skipped (full report)

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Flaky tests (3)

Postgres 17

• test_subscriber_restart: debug-x86-64

Postgres 16

• test_sharding_split_stripe_size[None]: release-x86-64
• test_restart_endpoint_after_switch_wal: release-arm64

Code coverage* (full report)

• functions: 31.3% (7489 of 23897 functions)
• lines: 49.5% (60133 of 121377 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
fafdb7f at 2024-10-03T17:58:44.284Z :recycle:}

[arpad-m]

Slack link for posterity: https://neondb.slack.com/archives/C07C3NFFDR6/p1727958810611839