ci: update to current GitHub-hosted runner images

ubuntu-20.04 and windows-2019 were removed from GitHub Actions and
will never pick up jobs. Also simplify clang-tidy installation since
the new Ubuntu image ships a recent enough version in default repos.

Author: oetr

.github/workflows/release.yaml

@@ -11,7 +11,7 @@ jobs:
     name: create prebuilds
     strategy:
       matrix:
-        os: [ubuntu-20.04, macos-latest, windows-2019]
+        os: [ubuntu-latest, macos-latest, windows-latest]
         opts: [""]
         include:
           - os: macos-latest
@@ -44,7 +44,7 @@ jobs:
   release:
     name: release
     needs: [prebuilds]
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     permissions:
       contents: write # for creating releases
     steps:

.github/workflows/run-all-tests-main.yaml

@@ -14,12 +14,12 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [windows-2019, ubuntu-20.04, macos-latest]
+        os: [windows-latest, ubuntu-latest, macos-latest]
         node: [16]
         include:
           # Test LTS versions on main
           # 18 on Ubuntu is sufficient, and 20 already tested in PR
-          - os: ubuntu-20.04
+          - os: ubuntu-latest
             node: 18
     steps:
       - name: checkout
@@ -52,7 +52,7 @@ jobs:
         run: npm run test
   fuzz_tests:
     name: fuzz tests
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - name: checkout
         uses: actions/checkout@v3
@@ -81,7 +81,7 @@ jobs:
         run: node fuzztests/runFuzzTests.js
   end-to-end:
     name: end-to-end
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - name: checkout
         uses: actions/checkout@v3

.github/workflows/run-all-tests-pr.yaml

@@ -11,7 +11,7 @@ concurrency:
 jobs:
   linting:
     name: lint
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - name: checkout
         uses: actions/checkout@v3
@@ -22,14 +22,8 @@ jobs:
           cache: "npm"
       - name: install dependencies
         run: npm ci
-      - name: install dependencies with apt
-        run: |
-          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-          sudo apt-get install software-properties-common
-          sudo add-apt-repository 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-16 main'
-          sudo apt-get install clang-tidy-16
-          sudo rm -f /usr/bin/clang-tidy
-          sudo ln -s /usr/bin/clang-tidy-16 /usr/bin/clang-tidy
+      - name: install clang-tidy
+        run: sudo apt-get install -y clang-tidy
       - name: build project
         # Build project so that imports can be checked during linting
         run: npm run build
@@ -44,7 +38,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [windows-2019, ubuntu-20.04, macos-latest]
+        os: [windows-latest, ubuntu-latest, macos-latest]
         # Test only latest LTS version in PRs
         node: [20]
     steps:
@@ -83,7 +77,7 @@ jobs:
     permissions:
       pull-requests: write
       contents: write
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     if: ${{ github.actor == 'dependabot[bot]' }}
     steps:
       - name: Dependabot metadata