add default token permissions (#81)

Author: klemenfn

.github/workflows/release-bitcoind.yml

@@ -7,6 +7,9 @@ on:
     branches: [main]
     paths: ["images/bitcoind/**"]
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   call:
     uses: ./.github/workflows/release-image.yml

.github/workflows/release-dogecoind.yml

@@ -7,6 +7,9 @@ on:
     branches: [main]
     paths: ["images/dogecoind/**"]
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   call:
     uses: ./.github/workflows/release-image.yml

.github/workflows/release-rippled.yml

@@ -7,6 +7,9 @@ on:
     branches: [main]
     paths: ["images/rippled/**"]
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   call:
     uses: ./.github/workflows/release-image.yml