Bump http-proxy-middleware from 2.0.6 to 2.0.7 in /test/dummy #13

Job	Run time
check_react_and_ujs (2.7)	7m 30s
test (npm, npm, 2.7, base)	1m 27s
test (npm, npm, 2.7, shakapacker)	7m 58s
test (npm, npm, 2.7, sprockets_3)	1m 42s
test (npm, npm, 2.7, sprockets_4)	1m 51s
test (yarn_classic, yarn, 2.7, base)	1m 3s
test (yarn_classic, yarn, 2.7, shakapacker)	7m 20s
test (yarn_classic, yarn, 2.7, sprockets_3)	11m 27s
test (yarn_classic, yarn, 2.7, sprockets_4)	1m 33s
test (pnpm, pnpm, 2.7, base)	1m 5s
test (pnpm, pnpm, 2.7, shakapacker)	7m 13s
test (pnpm, pnpm, 2.7, sprockets_3)	1m 39s
test (pnpm, pnpm, 2.7, sprockets_4)	1m 27s
test (bun, bun, 2.7, base)	3m 12s
test (bun, bun, 2.7, shakapacker)	7m 10s
test (bun, bun, 2.7, sprockets_3)	1m 20s
test (bun, bun, 2.7, sprockets_4)	11m 12s
	1h 16m 9s

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