[Snyk] Security upgrade rdflib from 2.2.0 to 2.2.1

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • package.json
  • package-lock.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Issue	Breaking Change	Exploit Maturity
	XML External Entity (XXE) Injection SNYK-JS-XMLDOM-1084960	No	No Known Exploit

Commit messages

Package name: rdflib

The new version differs by 29 commits.

• 8cc099e v2.2.1
• bb33daf update dependencies
• 823ff13 Merge pull request #447 from ludwigschubi/fix/request-header-type
• 4f10c22 Merge pull request #470 from linkeddata/fix-options-headers
• 0c8b2c3 resolve conflict
• be894bc remove check map property
• 45fcffc Update fetcher.ts
• c4f9945 Merge branch 'master' into fix-options-headers
• c04e47c retry integration
• 555e473 Merge pull request #493 from TallTed/patch-1
• 797b71b fix several typos in store.ts
• 1a5c538 Merge pull request #491 from linkeddata/updateMany-fix
• d61e933 Delete csarven-ori.ttl
• 2eec467 Merge pull request #492 from linkeddata/disable-features
• a51584f Disable Store fetures by default
• 1b9789a replace .map with .forEach
• 9319b20 fix updateMany issue#490
• 1aeeb2e Merge pull request #487 from bourgeoa/rdfa
• feab21c resolve rdf:HTML in RDFa
• 1ac11d7 Merge pull request #445 from ludwigschubi/master
• 546502b Merge pull request #484 from linkeddata/serialize-doubles-with-E
• d9a076b do not add .0 after 'e' notation
• 0492559 serialize doubles containing "E" correctly
• a481c07 Merge pull request #483 from bourgeoa/solid-namespace

See the full diff

Check the changes in this PR to ensure they won't cause issues with your project.

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