Only try to read signing data in release workflow (#3431)

.github/workflows/release.yml

@@ -4,6 +4,9 @@ on:
     tags:
       - v*
 
+env:
+  MIHON_GITHUB_RELEASE: true
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true

app/build.gradle.kts

@@ -43,7 +43,7 @@ android {
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
 
-    if (System.getenv("GITHUB_ACTIONS").toBoolean() && System.getenv("GITHUB_REPOSITORY_OWNER") == "mihonapp") {
+    if (System.getenv("MIHON_GITHUB_RELEASE").toBoolean()) {
         val tempStoreFile = file(System.getenv("RUNNER_TEMP")).resolve("antsy.keystore")
 
         val storeFileBytes = System.getenv("storeFileBase64").let(Base64::decode)