fix(ci): fix sign script - avoid interpreting {*}$argv

Signed-off-by: Vicente J. Jiménez Miras <[email protected]>

.circleci/config.yml

@@ -223,7 +223,7 @@ jobs:
             echo "%__gpg_sign_cmd %{__gpg} --force-v3-sigs --batch --no-armor --passphrase-fd 3 --no-secmem-warning -u \"%{_gpg_name}\" -sb --digest-algo sha256 %{__plaintext_filename}'" >> ~/.rpmmacros
             cat > ~/sign \<<EOF
             #!/usr/bin/expect -f
-            spawn rpmsign --addsign {*}$argv
+            spawn rpmsign --addsign {*}\$argv
             expect -exact "Enter pass phrase: "
             send -- "\n"
             expect eof