Bump dependencies

[Kielek]

Why

Dependabot could work better.

What

Bump packages:

• Hotfix for OpenTelemetry.Instrumentation.AspNetCore to 1.8.1
• Hotfix for OpenTelemetry.Instrumentation.Http to 1.8.1
• Tests dependencies

Tests

CI

Checklist

• CHANGELOG.md is updated.
• Documentation is updated.
• New features are covered by tests.

[pellared]

Hotfix for OpenTelemetry.Instrumentation.AspNetCore to 1.8.1
Hotfix for OpenTelemetry.Instrumentation.Http to 1.8.1

I am not sure if these are proper hotfixes that we should include.
See: open-telemetry/opentelemetry-dotnet#5541

Maybe we will should add code to set OTEL_DOTNET_EXPERIMENTAL_ASPNETCORE_DISABLE_URL_QUERY_REDACTION and OTEL_DOTNET_EXPERIMENTAL_HTTPCLIENT_DISABLE_URL_QUERY_REDACTION to true if these are unset. Also we miss docs for these env vars.