Fix broken pre-release GitHub Actions workflow

Author: shyiko

.github/workflows/pre-release.yaml

@@ -1,5 +1,6 @@
 name: pre-release
 on:
+  workflow_dispatch:
   push:
     paths:
       - '**/pom.xml'
@@ -42,9 +43,9 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Install regctl
-        uses: regclient/actions/regctl-installer@main
+        uses: regclient/actions/regctl-installer@ce5fd131e371ffcdd7508b478cb223b3511a9183
       - name: regctl login
-        uses: regclient/actions/regctl-login@main
+        uses: regclient/actions/regctl-login@ce5fd131e371ffcdd7508b478cb223b3511a9183
 
       - uses: actions/checkout@v4
 

.github/workflows/release.yaml

@@ -23,9 +23,9 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Install regctl
-        uses: regclient/actions/regctl-installer@main
+        uses: regclient/actions/regctl-installer@ce5fd131e371ffcdd7508b478cb223b3511a9183
       - name: regctl login
-        uses: regclient/actions/regctl-login@main
+        uses: regclient/actions/regctl-login@ce5fd131e371ffcdd7508b478cb223b3511a9183
 
       - uses: actions/checkout@v4