$ cat test_shebang.pl
#!/usr/bin/env perl

print $^V;

$ ./test_shebang.pl
v5.36.0

$ perlbrew switch perl-5.33.5

$ perl -v | head -2 | tail -1
This is perl 5, version 33, subversion 5 (v5.33.5) built for cygwin-thread-multi

$ ./test_shebang.pl
v5.33.5