scripted-diff: Use long form of shell options in Guix scripts

This improves readability and consistency across all Guix scripts.

-BEGIN VERIFY SCRIPT-

sed -i "s/^set -e\>/set -o errexit/g" \
 $( git grep -l "set -e" ./contrib/guix )

-END VERIFY SCRIPT-

contrib/guix/guix-attest

@@ -3,7 +3,7 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
 export LC_ALL=C.UTF-8
-set -e -o pipefail
+set -o errexit -o pipefail
 
 # Source the common prelude, which:
 #   1. Checks if we're at the top directory of the Bitcoin Core repository

contrib/guix/guix-clean

@@ -3,7 +3,7 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
 export LC_ALL=C.UTF-8
-set -e -o pipefail
+set -o errexit -o pipefail
 
 # Source the common prelude, which:
 #   1. Checks if we're at the top directory of the Bitcoin Core repository

contrib/guix/guix-codesign

@@ -3,7 +3,7 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
 export LC_ALL=C.UTF-8
-set -e -o pipefail
+set -o errexit -o pipefail
 
 # Source the common prelude, which:
 #   1. Checks if we're at the top directory of the Bitcoin Core repository

contrib/guix/guix-verify

@@ -3,7 +3,7 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
 export LC_ALL=C.UTF-8
-set -e -o pipefail
+set -o errexit -o pipefail
 
 # Source the common prelude, which:
 #   1. Checks if we're at the top directory of the Bitcoin Core repository

contrib/guix/libexec/codesign.sh

@@ -3,7 +3,7 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
 export LC_ALL=C.UTF-8
-set -e -o pipefail
+set -o errexit -o pipefail
 
 # Environment variables for determinism
 export TAR_OPTIONS="--owner=0 --group=0 --numeric-owner --mtime='@${SOURCE_DATE_EPOCH}' --sort=name"

contrib/guix/libexec/package.sh

@@ -3,7 +3,7 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or https://opensource.org/license/mit.
 export LC_ALL=C.UTF-8
-set -e -o pipefail
+set -o errexit -o pipefail
 
 (
     cd "$DISTSRC"