fix(ci): rename syntax-error fixture to .bash so shellcheck skips it

ShellCheck's find-based scanner matched the fixture even with ignore_paths,
so rename to .bash to keep it out of both the CI scanner and `make sa`.

Author: Chemaclass

.github/workflows/static_analysis.yml

@@ -25,6 +25,4 @@ jobs:
         uses: ludeeus/action-shellcheck@master
         env:
           SHELLCHECK_OPTS: -e SC1091 -e SC2155 -e SC2016
-        with:
-          ignore_paths: tests/acceptance/fixtures/test_bashunit_when_syntax_error.sh
 

tests/acceptance/bashunit_syntax_error_test.sh

@@ -10,7 +10,7 @@ function strip_ansi() {
 }
 
 function test_bashunit_when_test_file_has_syntax_error() {
-  local test_file=./tests/acceptance/fixtures/test_bashunit_when_syntax_error.sh
+  local test_file=./tests/acceptance/fixtures/test_bashunit_when_syntax_error.bash
 
   local actual_raw
   set +e