test: make Linux release workflows rerunnable

.github/workflows/cardputer-zero-linux.yml

@@ -1,6 +1,7 @@
 name: Cardputer Zero Linux
 
 on:
+  workflow_dispatch:
   push:
     paths:
       - "apps/linux_cardputer_zero/**"

.github/workflows/linux-simulator.yml

@@ -1,6 +1,7 @@
 name: Linux Simulator
 
 on:
+  workflow_dispatch:
   push:
     paths:
       - "apps/linux_sim_shell/**"

.github/workflows/uconsole-linux.yml

@@ -1,6 +1,7 @@
 name: uConsole Linux
 
 on:
+  workflow_dispatch:
   push:
     paths:
       - "apps/linux_uconsole_gtk/**"