chore(action): update erlef/setup-beam action to v1.20.3

Author: renovate[bot]

.github/workflows/release.yml

@@ -28,7 +28,7 @@ jobs:
 
       - name: Set up Elixir
         id: setup-beam
-        uses: erlef/setup-beam@5304e04ea2b355f03681464e683d92e3b2f18451 # v1.18.2
+        uses: erlef/setup-beam@8e7fdef09ffa3ea54328b5000c170a3b9b20ca96 # v1.20.3
         with:
           version-type: strict
           version-file: .tool-versions

.github/workflows/test.yml

@@ -60,7 +60,7 @@ jobs:
 
       - name: Set up BEAM
         id: setup-beam
-        uses: erlef/setup-beam@5304e04ea2b355f03681464e683d92e3b2f18451 # v1.18.2
+        uses: erlef/setup-beam@8e7fdef09ffa3ea54328b5000c170a3b9b20ca96 # v1.20.3
         with:
           otp-version: ${{matrix.otp}}
           elixir-version: ${{matrix.elixir}}