Update base image and remove purposely added failing test

Signed-off-by: yubiuser <github@yubiuser.dev>

.github/Dockerfile

@@ -1,4 +1,4 @@
-FROM ghcr.io/pi-hole/ftl-build:v2.7 AS builder
+FROM ghcr.io/pi-hole/ftl-build:v2.8 AS builder
 
 WORKDIR /app
 
@@ -13,8 +13,7 @@ ENV GIT_TAG=${GIT_TAG}
 ARG BUILD_OPTS=""
 ENV BUILD_OPTS=${BUILD_OPTS}
 
-# Add ncurses used for pretty output in bats tests
-RUN apk add --no-cache ncurses
+# Setting TERM is needed for pretty output in BATS tests
 ENV TERM=xterm
 
 # Monkeypatch BATS to remove duplicate output of starting and finished test

test/test_suite.bats

@@ -1,9 +1,5 @@
 #!./test/libs/bats/bin/bats
 
-@test 'fail()' {
-  fail 'this test always fails'
-}
-
 @test "Compare template and test TOML config files" {
   # We skip the first 5 lines of the files as they contain the version and
   # timestamp of the file creation/modification