chore(deps): update rust crate testcontainers to 0.20.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
testcontainers	dependencies	minor	0.19.0 -> 0.20.0

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Release Notes

testcontainers/testcontainers-rs (testcontainers)

### [`v0.20.0`](https://togithub.com/testcontainers/testcontainers-rs/blob/HEAD/CHANGELOG.md#0200---2024-07-07) [Compare Source](https://togithub.com/testcontainers/testcontainers-rs/compare/0.19.0...0.20.0) ##### Details ##### Bug Fixes - \[❗] Drop `Clone` impl for `ContainerRequest` ([#​680](https://togithub.com/testcontainers/testcontainers-rs/pull/680)) - Exclude image pulling time from startup timeout ([#​687](https://togithub.com/testcontainers/testcontainers-rs/pull/687)) - Waiting for mutiple messages from the same log frame ([#​688](https://togithub.com/testcontainers/testcontainers-rs/pull/688)) - Pass correct log-source for `stderr` wait strategy ([#​692](https://togithub.com/testcontainers/testcontainers-rs/pull/692)) ##### Features - Introduce log consumers ([#​681](https://togithub.com/testcontainers/testcontainers-rs/pull/681)) - Introduce `LoggingConsumer` based on `log` crate ([#​682](https://togithub.com/testcontainers/testcontainers-rs/pull/682)) - \[❗] Enhance `LogWaitStrategy` to wait for message appearance multiple times ([#​683](https://togithub.com/testcontainers/testcontainers-rs/pull/683)) - \[❗] Introduce `ExitWaitStrategy` ([#​684](https://togithub.com/testcontainers/testcontainers-rs/pull/684)) ##### Miscellaneous Tasks - Get rid of outdated variables naming ([#​679](https://togithub.com/testcontainers/testcontainers-rs/pull/679)) - Relax log level for log producer error ([#​685](https://togithub.com/testcontainers/testcontainers-rs/pull/685)) - Re-configure blocking runtime ([#​690](https://togithub.com/testcontainers/testcontainers-rs/pull/690)) ##### Performance - Avoid spawning log producer without consumers ([#​689](https://togithub.com/testcontainers/testcontainers-rs/pull/689)) ##### Refactor - Internal log processing structures ([#​678](https://togithub.com/testcontainers/testcontainers-rs/pull/678)) ##### Styling - Apply clippy suggestion ([#​693](https://togithub.com/testcontainers/testcontainers-rs/pull/693))

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