fix: Fix shebangs

tests/parse_uri.bats

@@ -1,4 +1,4 @@
-#! /usr/bin/env bats
+#!/usr/bin/env bats
 
 # parse_uri() from lib/uri.sh tests.
 # See: https://bats-core.readthedocs.io/en/latest/index.html

tests/source_script.bats

@@ -1,4 +1,4 @@
-#! /usr/bin/env bats
+#!/usr/bin/env bats
 
 # source_script() from lib/source.sh tests.
 # See: https://bats-core.readthedocs.io/en/latest/index.html