Update pyminify to return the input source unchanged if it can't be m… #524

Job	Run time
Test Windows (3.6)	1m 11s
Test Windows (2.7)	1m 5s
Linting	41s
Test Windows (3.9)	37s
Test Windows (3.8)	1m 10s
Lint Dockerfiles (Dockerfile-fedora28)	11s
Test Windows (3.11)	40s
Test Windows (3.12)	48s
Test Windows (3.10)	1m 21s
Test Windows (3.13)	40s
Test Windows (3.7)	1m 20s
Lint Dockerfiles (Dockerfile-fedora30)	9s
Lint Dockerfiles (Dockerfile-fedora32)	10s
Test (python3.6)	12s
Lint Dockerfiles (Dockerfile-fedora40)	10s
Lint Dockerfiles (Dockerfile-fedora34)	13s
Test (python3.7)	12s
Lint Dockerfiles (Dockerfile-fedora36)	12s
Lint Dockerfiles (Dockerfile-fedora38)	6s
Test (pypy3)	15s
Test (python3.5)	15s
Lint Dockerfiles (Dockerfile-fuzz)	10s
Test (python2.7)	14s
Test (python3.13)	23s
Test (python3.11)	22s
Test (python3.10)	24s
Test (python3.8)	13s
Test (python3.9)	23s
Test (pypy)	14s
Test (python3.12)	24s
Test (python3.3)	14s
Test (python3.4)	13s
	14m 52s

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