feat: replace acorn with @babel/parser

[eduardoboucas]

- Summary

With this PR, we'll use @babel/parser instead of acorn to parse imports with dynamic expressions.

The AST format is fairly similar, except for some deviations.

- Test plan

N/A

- A picture of a cute animal (not mandatory but encouraged)

Closes https://github.com/netlify/pod-serverless/issues/40.

[github-actions]

⏱ Benchmark results

Comparing with b843aae

largeDepsEsbuild: 11.3s

⬆️ 4.50% increase vs. b843aae

^          13.9s   13.9s                           14.1s   14.2s                                          
│           ┌──┐    ┌──┐                            ┌──┐    ┌──┐   13.5s   13.2s           13.3s          
│           |  |    |  |                   12.8s    |  |    |  |    ┌──┐    ┌──┐            ┌──┐          
│ ──────────┼──┼────┼──┼────────────────────┌──┐────┼──┼────┼──┼────┼──┼────┼──┼────────────┼──┼──────────
│           |  |    |  |   11.4s            |  |    |  |    |  |    |  |    |  |   11.1s    |  |   11.3s  
│           |  |    |  |    ┌──┐            |  |    |  |    |  |    |  |    |  |    ┌──┐    |  |    ┌──┐  
│  10.3s    |  |    |  |    |  |   10.1s    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |▒▒|  
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└───┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴──>
    T-12    T-11    T-10    T-9     T-8     T-7     T-6     T-5     T-4     T-3     T-2     T-1      T    

Legend

• T-30 (b843aae): 10.8s
• T-29 (cdbcad2): 12.8s
• T-28 (ff051cd): 11.8s
• T-27 (c649c29): 12.5s
• T-26 (9c628c8): 11.4s
• T-25 (bf6a59b): 12.9s
• T-24 (85cc47d): 13.4s
• T-23 (b105692): 12.4s
• T-22 (9b0c6d5): 10.6s
• T-21 (53d0281): 12.2s
• T-20 (b468b2a): 11.1s
• T-19 (a9b86e2): 11.1s
• T-18 (4c64157): 11.5s
• T-17 (fbcb80f): 11.3s
• T-16 (cde6c63): 12.4s
• T-15 (c1e762d): 13.6s
• T-14 (cc48969): 13s
• T-13 (ce3c162): 13.7s
• T-12 (fc6b3ef): 10.3s
• T-11 (cde4e51): 13.9s
• T-10 (cde2295): 13.9s
• T-9 (e463691): 11.4s
• T-8 (ecb8856): 10.1s
• T-7 (73456ff): 12.8s
• T-6 (452f7ee): 14.1s
• T-5 (fcc82b7): 14.2s
• T-4 (0862f9a): 13.5s
• T-3 (8227298): 13.2s
• T-2 (4bec0a7): 11.1s
• T-1 (ccea887): 13.3s
• T (current commit): 11.3s

largeDepsZisi: 59.6s

⬆️ 4.84% increase vs. b843aae

^         1m 13.5s1m 14.3s                                1m 14.8s                                        
│           ┌──┐    ┌──┐                          1m 10.9s  ┌──┐  1m 11.3s1m 9.5s         1m 12.5s        
│           |  |    |  |                  1m 7.8s   ┌──┐    |  |    ┌──┐    ┌──┐            ┌──┐          
│ ──────────┼──┼────┼──┼────────────────────┌──┐────┼──┼────┼──┼────┼──┼────┼──┼──1m 2.7s───┼──┼──────────
│           |  |    |  |                    |  |    |  |    |  |    |  |    |  |    ┌──┐    |  |   59.6s  
│           |  |    |  |   57.6s            |  |    |  |    |  |    |  |    |  |    |  |    |  |    ┌──┐  
│  52.9s    |  |    |  |    ┌──┐   50.8s    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |▒▒|  
│   ┌──┐    |  |    |  |    |  |    ┌──┐    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |▒▒|  
│   |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |▒▒|  
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│   |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |▒▒|  
│   |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |  |    |▒▒|  
└───┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴──>
    T-12    T-11    T-10    T-9     T-8     T-7     T-6     T-5     T-4     T-3     T-2     T-1      T    

Legend

• T-30 (b843aae): 56.7s
• T-29 (cdbcad2): 1m 9s
• T-28 (ff051cd): 1m 2.2s
• T-27 (c649c29): 1m 4.8s
• T-26 (9c628c8): 57.8s
• T-25 (bf6a59b): 1m 10.4s
• T-24 (85cc47d): 1m 10.1s
• T-23 (b105692): 1m 7.2s
• T-22 (9b0c6d5): 58s
• T-21 (53d0281): 1m 5.7s
• T-20 (b468b2a): 59.1s
• T-19 (a9b86e2): 57.6s
• T-18 (4c64157): 58s
• T-17 (fbcb80f): 56.5s
• T-16 (cde6c63): 1m 7.4s
• T-15 (c1e762d): 1m 10.3s
• T-14 (cc48969): 1m 8s
• T-13 (ce3c162): 1m 11.6s
• T-12 (fc6b3ef): 52.9s
• T-11 (cde4e51): 1m 13.5s
• T-10 (cde2295): 1m 14.3s
• T-9 (e463691): 57.6s
• T-8 (ecb8856): 50.8s
• T-7 (73456ff): 1m 7.8s
• T-6 (452f7ee): 1m 10.9s
• T-5 (fcc82b7): 1m 14.8s
• T-4 (0862f9a): 1m 11.3s
• T-3 (8227298): 1m 9.5s
• T-2 (4bec0a7): 1m 2.7s
• T-1 (ccea887): 1m 12.5s
• T (current commit): 59.6s

[ehmicky]

Looks good!
I checked for any Babel parser difference in dynamic_imports/parser.js and only found the one you changed (StringLiteral). 👍