Workflows: Use explicit ubuntu-22.04 instead of a varying ubuntu-latest

Also notice that ubuntu-22.04 doesn't include Erlang/OTP.

.github/workflows/container.yml

@@ -19,7 +19,7 @@ env:
 jobs:
   container:
     name: Container
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       packages: write
     steps:

.github/workflows/installers.yml

@@ -21,7 +21,7 @@ on:
 jobs:
   binaries:
     name: Binaries
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Cache build directory
         uses: actions/cache@v3
@@ -70,7 +70,7 @@ jobs:
   release:
     name: Release
     needs: [binaries]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     if: github.ref_type == 'tag'
     steps:
       - name: Download packages

.github/workflows/runtime.yml

@@ -33,7 +33,7 @@ jobs:
       matrix:
         otp: ['20.3', '25.3', '26']
         rebar: ['rebar', 'rebar3']
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     container:
       image: erlang:${{ matrix.otp }}