ci(bench): do not fail benchmarks when Polar Signals setup fails

[joseph-isaacs]

No description provided.

[codspeed-hq]

Merging this PR will degrade performance by 0.11%

⚡ 2 improved benchmarks
❌ 2 regressed benchmarks
✅ 1933 untouched benchmarks
⏩ 51 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	decode_varbin[(1000, 2)]	62.1 µs	78.6 µs	-21.03%
❌	Simulation	decompress[u64, (1000, 16)]	65.1 µs	73.1 µs	-10.92%
⚡	Simulation	decompress[u32, (10000, 256)]	100.4 µs	83.6 µs	+20.11%
⚡	Simulation	cold_misaligned[(64, 256)]	5.1 ms	4.4 ms	+17.85%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing claude/parca-agent-download-failure-gha9fg (9c75ddd) with develop (66c447e)}

Footnotes

1. 51 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩