apt-get update may be required on workflows

.github/workflows/ci.yml

@@ -14,6 +14,9 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
+      - name: Update packages list
+        run: sudo apt-get update
+
       - name: Install dependencies
         run: sudo apt-get install -y build-essential libtool autoconf automake tcc
 
@@ -33,6 +36,9 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
+      - name: Update packages list
+        run: sudo apt-get update
+
       - name: Install dependencies
         run: sudo apt-get install -y build-essential libtool autoconf automake
 
@@ -59,6 +65,9 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
+      - name: Update packages list
+        run: sudo apt-get update
+
       - name: Install dependencies
         run: sudo apt-get install -y build-essential libtool autoconf automake
 
@@ -74,6 +83,9 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
+      - name: Update packages list
+        run: sudo apt-get update
+
       - name: Install dependencies
         run: sudo apt-get install -y build-essential libtool autoconf automake clang
 
@@ -97,6 +109,9 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
+      - name: Update packages list
+        run: sudo apt-get update
+
       - name: Install dependencies
         run: sudo apt-get install -y build-essential libtool autoconf automake qemu-user-static gcc-powerpc-linux-gnu