Update OTel dependencies for Alloy compatibility

[dehaansa]

Working on the next Alloy release's OTel dependencies grafana/alloy#4816, seeing this error during build.

Error: /go/pkg/mod/github.com/grafana/opentelemetry-ebpf-instrumentation@v1.3.6/pkg/export/otel/traces.go:217:13: cannot use convertHeaders(opts.Headers) (value of type map[string]configopaque.String) as configopaque.MapList value in struct literal
Error: /go/pkg/mod/github.com/grafana/opentelemetry-ebpf-instrumentation@v1.3.6/pkg/export/otel/traces.go:274:13: cannot use convertHeaders(opts.Headers) (value of type map[string]configopaque.String) as configopaque.MapList value in struct literal

Checklist

• If this enhances / fixes / changes a core feature, I have updated the features documentation

[codecov-commenter]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (main@63d55ed). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
pkg/export/otel/traces.go	66.66%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #26   +/-   ##
=======================================
  Coverage        ?   55.42%           
=======================================
  Files           ?      251           
  Lines           ?    21400           
  Branches        ?        0           
=======================================
  Hits            ?    11861           
  Misses          ?     8731           
  Partials        ?      808           

Flag	Coverage Δ
integration-test	23.26% <0.00%> (?)
integration-test-arm	0.00% <0.00%> (?)
k8s-integration-test	2.77% <0.00%> (?)
oats-test	0.00% <0.00%> (?)
unittests	46.53% <66.66%> (?)

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[grcevski]

LGTM!