allow deprecated SDPX identifiers

[ericphanson]

Without these, things like is_osi_approved("LGPL-3.0") returns false, which is very misleading, since it is OSI approved, and the OSI website shows "LGPL-3.0" as the SDPX identifier for the license (https://opensource.org/licenses/alphabetical). It just happens to be deprecated as an SDPX identifier (they want you to use "LGPL-3.0-only" or "LGPL-3.0-or-later" instead, but when it's ambiguous, licensecheck returns "LGPL-3.0").

[codecov]

Codecov Report

Merging #4 (7ff2668) into main (23ce74b) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main        #4   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         2    +1     
  Lines            5        35   +30     
=========================================
+ Hits             5        35   +30     

Impacted Files	Coverage Δ
src/LicenseCheck.jl	100.00% <100.00%> (ø)
src/find_licenses.jl	100.00% <100.00%> (ø)

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