Update Zig version in devcontainer Dockerfile

[hulto]

Updated the ZIG_VERSION argument in .devcontainer/Dockerfile to 0.16.0-dev.3041+3dc5f1398. This ensures that the development and CI environments use the latest master version of Zig, addressing potential Docker build CI failures. verified the change and confirmed that all relevant Go and Rust tests pass.

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PR created automatically by Jules for task 10769081516813389462 started by @hulto

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[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
2935	2935	0	0	0	0	1ms

Previous Results

Build 🏗️	Result 🧪	Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
#1923	✅	2935	2935	0	0	0	0	32.5s

Insights

Average Tests per Run	Total Flaky Tests	Total Failed	Slowest Test (p95)
2935	0	0	6m 46s

Test Changes

0 test added, 0 removed

Slowest Tests

Test 📝	Results 📊	Duration (avg) ⏱️	Duration (p95) ⏱️
eldritch-libfile: std::list_recent_impl::tests::test_list_recent_default_args	3	4m 12s	6m 46s
eldritch-libfile: std::list_recent_impl::tests::test_list_recent_default_args	3	4m 12s	6m 46s
eldritch-libfile: std::list_recent_impl::tests::test_list_recent_default_args	3	4m 12s	6m 46s
TestDockerExecutor_Build_ContextCancellation	1	6.1s	6.1s
eldritch-libsys: std::dll_inject_impl::tests::test_dll_inject_simple	1	5.2s	5.2s
TestInteractiveShell	1	5.0s	5.0s
TestOtherStreamOutput	1	5.0s	5.0s
TestDockerExecutor_Build_SimpleEcho	1	4.3s	4.3s
imix::bin/imix: tests::task_tests::test_task_streaming_error	3	3.1s	3.2s
imix::bin/imix: tests::task_tests::test_task_streaming_error	3	3.1s	3.2s

_{🎉 No failed tests in this run. | 🍂 No flaky tests in this run.}

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