[interpreter] ruby - removal of symbols to the internal state/stack

[florianl]

ruby/ruby#7459 removed the access to symbols, that provided access to investigate the Ruby internal stack and enabled walking this interpeter stack.

opentelemetry-ebpf-profiler/interpreter/ruby/ruby.go

Lines 838 to 844 in 2c2cb6b

	// Before Ruby 2.5 the symbol ruby_current_thread was used for the current execution
	// context but got replaced in [0] with ruby_current_execution_context_ptr.
	// With [1] the Ruby internal execution model changed and the symbol
	// ruby_current_execution_context_ptr was removed. Therefore we need to lookup different
	// symbols depending on the version.
	// [0] https://github.com/ruby/ruby/commit/837fd5e494731d7d44786f29e7d6e8c27029806f
	// [1] https://github.com/ruby/ruby/commit/79df14c04b452411b9d17e26a398e491bca1a811

Identify a new way to gain access to the Ruby internal state and stack to support newer versions of Ruby.