GH/scripts/environment.sh: expect pipefail avail

Expect that the shell implements pipefail - as the environment.sh is
run (sourced) always by bash (implicit CI shell for Linux/macOS and
C:\shells\msys2bash.cmd set explictly in Windows).

this changes c1cfe73 (from today)

Author: MartinPulec

.github/scripts/environment.sh

@@ -10,7 +10,7 @@
 ##                           password $KEY_FILE_PASS)
 
 set -eu
-set -o pipefail || true
+set -o pipefail
 
 if expr "$GITHUB_REF" : 'refs/tags/' >/dev/null; then
   TAG=${GITHUB_REF#refs/tags/}