build: win/mac: rename pyinstaller spec files

for clarity
also, "deterministic.spec" is a confusing name

contrib/build-wine/build-electrum-git.sh

@@ -62,7 +62,7 @@ rm -rf dist/
 
 # build standalone and portable versions
 info "Running pyinstaller..."
-ELECTRUM_CMDLINE_NAME="$NAME_ROOT-$VERSION" wine "$WINE_PYHOME/scripts/pyinstaller.exe" --noconfirm --clean deterministic.spec
+ELECTRUM_CMDLINE_NAME="$NAME_ROOT-$VERSION" wine "$WINE_PYHOME/scripts/pyinstaller.exe" --noconfirm --clean pyinstaller.spec
 
 # set timestamps in dist, in order to make the installer reproducible
 pushd dist