Update elftools requirement from >= 1.0.1, < 1.2.0 to >= 1.0.1, < 1.3.0

[dependabot[bot]]

Updates the requirements on elftools to permit the latest version.

Release notes

Sourced from elftools's releases.

v1.1.3

• Drop Ruby 2.3 support
• Add SHN_, PF_, DT_VERSYM constants. (#44, @​rmNULL)

Commits

• 27a5b19 Bump v1.1.3 (#47)
• 2c3c652 Add SHN_, PF_, DT_VERSYM constants. (#44)
• 9b9c9aa Update .rubocop.yml to using Ruby 2.5 (#45)
• 66189a9 Bump v1.1.2
• e65e79c Remove Ruby 2.3 and add 2.7 to travis.yml
• 670e180 elftools: Add finer-grained exceptions (#43)
• ea83cd5 Bump v1.1.1
• a4c7669 Suppress warning of keyword arguments introduced in Ruby 2.7 (#42)
• 6416bb2 Update rake requirement from ~> 12.1 to ~> 13.0 (#41)
• 1cd4ad4 required ruby version >= 2.3 (#40)
• Additional commits viewable in compare view

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