test(powertest): fix version tests

I suppose these should be regenerated as part of the release process... I'll do
that eventually...

Signed-off-by: Christina Sørensen <christina@cafkafk.com>

tests/gen/ptest_a82ad7ec2e961f84.stdout

@@ -1,3 +1,3 @@
 eza - A modern, maintained replacement for ls
-v0.16.0 [+git] (pre-release debug build!)
+v0.16.1 [+git] (pre-release debug build!)
 https://github.com/eza-community/eza

tests/gen/ptest_af29d370729835d8.stdout

@@ -1,3 +1,3 @@
 eza - A modern, maintained replacement for ls
-v0.16.0 [+git] (pre-release debug build!)
+v0.16.1 [+git] (pre-release debug build!)
 https://github.com/eza-community/eza

tests/ptests/ptest_a82ad7ec2e961f84.stdout

@@ -1,3 +1,3 @@
 eza - A modern, maintained replacement for ls
-v0.16.0 [+git] (pre-release debug build!)
+v0.16.1 [+git] (pre-release debug build!)
 https://github.com/eza-community/eza

tests/ptests/ptest_af29d370729835d8.stdout

@@ -1,3 +1,3 @@
 eza - A modern, maintained replacement for ls
-v0.16.0 [+git] (pre-release debug build!)
+v0.16.1 [+git] (pre-release debug build!)
 https://github.com/eza-community/eza