Bump tar and npm in /demo

[dependabot[bot]]

Removes tar. It's no longer used after updating ancestor dependency npm. These dependencies need to be updated together.

Removes tar

Updates npm from 6.14.5 to 6.14.18

Changelog

Sourced from npm's changelog.

6.14.18 (2022-12-21)

DEPENDENCIES

• f55bd65da rimraf@2.7.1
• cd4894696 bluebird@3.7.2
• 023d7e96b cacache@12.0.4
• dd2811c0b config-chain@1.1.1:3
• e21b6ebd9 deep-equal@1.1.1
• 2bec581c6 dezalgo@1.0.4
• 273485157 figgy-pudding@3.5.2
• 720f8ae5e glob@7.2.3
• 5f1200e33 graceful-fs@4.2.1:0
• 58b74a38b is-cidr@3.1.1
• 4b609655f jsdom@16.7.0
• 14c7a1a85 meant@1.0.3
• 06d9cefc4 minimatch@3.1.2
• 1d2da355c mkdirp@0.5.6
• 22eda3a26 node-gyp@5.1.1
• b77a7f1b0 npm-registry-mock@1.3.2
• de37398af query-string@6.14.1
• 196650baa qw@1.0.2
• 3218c16b5 read-package-json@2.1.2
• 0f5d57919 request@2.88.2
• 43ed5c23b safe-buffer@5.2.1
• 31b51c564 tar-stream@2.2.0
• 209a79d1f uuid@3.4.0

... (truncated)

Commits

• 1314dc0 6.14.18
• 04cb2c7 update AUTHORS
• 771245f docs: changelog for v6.14.18
• ade941c chore: remove gh legacy url test
• 0a5f8d9 chore: remove verify no scoped test
• d3e7eed lock-verify@2.2.2
• 8b357e5 decode-uri-component@0.2.2
• db32f16 chore: minimatch is not a dep
• f521320 chore: cleanup lockfile
• 0437207 chore: should only lint source
• Additional commits viewable in compare view

Maintainer changes

This version was pushed to npm by lukekarrys, a new releaser for npm since your current version.

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