actions: update Ubuntu 20.04 -> 22.04

Author: gperciva

.github/workflows/compile.yml

@@ -30,7 +30,7 @@ env:
 jobs:
   Ubuntu:
     name: Ubuntu
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
     - name: Update apt-get
       run: sudo apt-get update
@@ -44,12 +44,12 @@ jobs:
         autoreconf -i
     - name: Configure with clang
       env:
-        CC: clang-10
+        CC: clang-13
         CFLAGS: ${{ env.CFLAGS_ALL }}
       run: ./configure
     - name: Compile with clang
       env:
-        CC: clang-10
+        CC: clang-13
         CFLAGS: ${{ env.CFLAGS_ALL }}
                 ${{ env.CFLAGS_CLANG_LIBCPERCIVA }}
                 ${{ env.CFLAGS_CLANG_PROJECT }}

.github/workflows/coverity-scan.yml

@@ -10,7 +10,7 @@ on:
 # requires us to fake a TRAVIS_BRANCH environment variable.
 jobs:
   coverity-scan:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout
         uses: actions/checkout@v4