Update CI runner (tlspuffin#234)

* ci: update CI runner to ubuntu 22.04

* ci: fix inconsistent bindgen invocations between systems

  By default, bindgen will use the libclang version with the highest version.
  This doesn't necessarily match clang's version. In CI's ubuntu-22.04, the
  default clang is 14.x and the highest available version of libclang is 15.x.

  We now force bindgen to use the matching pair by setting the CLANG_PATH and
  LIBCLANG_PATH environment variables in the CI setup action.

* ci: set consistent env variables across all workflows

  We now set rust environment variables during the setup action running at the
  beginning of each workflow. This should ensure a consistent environment
  between the different workflows and allow more cache reuse in the future.

---------

Co-authored-by: Michael Mera <[email protected]>

.github/actions/setup/action.yml

@@ -14,6 +14,22 @@ inputs:
 runs:
   using: "composite"
   steps:
+    - name: setup CI env
+      shell: bash
+      run: |
+        #!/usr/bin/env bash
+        export_env() {
+          local var=${1}
+          local val=${2:-${!1}}
+
+          printf '%s=%s\n' "${var}" "${val}" >> "${GITHUB_ENV}"
+        }
+
+        export_env RUST_LOG "info"
+        export_env CLANG_PATH "$(clang -print-prog-name=clang)"
+        export_env LIBCLANG_PATH "$(llvm-config-"$(clang -dumpversion | cut -d '.' -f1)" --libdir)"
+        export_env BINDGEN_EXTRA_CLANG_ARGS "-v"
+
     - uses: extractions/setup-just@v1
     - name: Install toolchain
       shell: bash

.github/workflows/build-deploy-docs.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   build-docs:
     name: Build
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v3
         with:
@@ -39,7 +39,7 @@ jobs:
     needs: build-docs
     if: inputs.deploy
     name: Deploy
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v3
       - name: Download api-docs

.github/workflows/build-linux.yml

@@ -25,12 +25,9 @@ on:
         required: false
         type: string
 
-env:
-  RUST_LOG: info
-
 jobs:
   build-linux:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     name: Build "${{ inputs.name }}"
     steps:
       - uses: actions/checkout@v3

.github/workflows/run-benchmarks.yml

@@ -6,7 +6,7 @@ on:
 jobs:
   run-benchmarks:
     name: Benchmark
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v3
         with:

.github/workflows/run-checks.yml

@@ -6,7 +6,7 @@ on:
 jobs:
   run-checks:
     name: Check
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v3
         with: