[tests] install wikitextparser instead of mwparserfromhell for Python… #1306

Job	Run time
build (pypy3.7, wikipedia, test, test.wikipedia.org)	48s
build (pypy3.7, wikipedia, test, test.wikipedia.org)	1m 44s
build (pypy3.10, wikipedia, test, test.wikipedia.org)	46s
build (pypy3.10, wikipedia, test, test.wikipedia.org)	1m 23s
build (3.7, wikipedia, test, test.wikipedia.org)	32s
build (3.7, wikipedia, test, test.wikipedia.org)	58s
build (3.8, wikipedia, test, test.wikipedia.org)	23s
build (3.8, wikipedia, test, test.wikipedia.org)	59s
build (3.9, wikipedia, test, test.wikipedia.org)	55s
build (3.9, wikipedia, test, test.wikipedia.org)	55s
build (3.10, wikipedia, test, test.wikipedia.org)	1m 8s
build (3.10, wikipedia, test, test.wikipedia.org)	1m 8s
build (3.11, wikipedia, test, test.wikipedia.org)	26s
build (3.11, wikipedia, test, test.wikipedia.org)	59s
build (3.12, wikipedia, test, test.wikipedia.org)	26s
build (3.12, wikipedia, test, test.wikipedia.org)	57s
build (3.13.0-alpha - 3.13.0, wikipedia, test, test.wikipedia.org)	4m 40s
build (3.13.0-alpha - 3.13.0, wikipedia, test, test.wikipedia.org)	1m 15s
build (3.14-dev, wikipedia, test, test.wikipedia.org)	1m 43s
build (3.14-dev, wikipedia, test, test.wikipedia.org)	1m 43s
build (3.7, wpbeta, en, en.wikipedia.beta.wmflabs.org)	4m 41s
build (3.7, wpbeta, en, en.wikipedia.beta.wmflabs.org)	1m 5s
build (3.7, wpbeta, zh, zh.wikipedia.beta.wmflabs.org)	4m 34s
build (3.7, wpbeta, zh, zh.wikipedia.beta.wmflabs.org)	1m 4s
	35m 12s

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