Merge bitcoin/bitcoin#23462: test: Enable SC2046 and SC2086 shellcheck rules

fe0ff569ea test: Enable SC2046 shellcheck rule (Hennadii Stepanov)
9a1ad7bc0d test: Enable SC2086 shellcheck rule (Hennadii Stepanov)

Pull request description:

  Closes #20879.
  Replaces #22695.

  **Note for reviewers**. Some touched shell scripts are not being run in CI, therefore they require more thorough reviewing:
  - `contrib/devtools/gen-manpages.sh`
  - `contrib/macdeploy/detached-sig-apply.sh`
  - `contrib/windeploy/detached-sig-create.sh`
  - `src/qt/res/animation/makespinner.sh`

ACKs for top commit:
  laanwj:
    Code review re-ACK fe0ff569ea

Tree-SHA512: 73619b9a7bcb6cf0dfc4189a753ef550d40c82a3432bb9d8d8a994310d42594576038daac7e0c2fc004d716976bb1413b9a77848ecf088b25b69ed0773b77e8e

contrib/verify-commits/pre-push-hook.sh

@@ -9,11 +9,11 @@ if ! [[ "$2" =~ ^(git@)?(www.)?github.com(:|/)bitcoin/bitcoin(.git)?$ ]]; then
 fi
 
 while read LINE; do
-    set -- A $LINE
+    set -- A "$LINE"
     if [ "$4" != "refs/heads/master" ]; then
         continue
     fi
-    if ! ./contrib/verify-commits/verify-commits.py $3 > /dev/null 2>&1; then
+    if ! ./contrib/verify-commits/verify-commits.py "$3" > /dev/null 2>&1; then
         echo "ERROR: A commit is not signed, can't push"
         ./contrib/verify-commits/verify-commits.py
         exit 1