Follow up from cron-daily-fuzz PR

I royally botched up PR #683 which changed fuzzing to run daily, fix it
up by doing:

- Use the correct yaml file name in `generate-files.sh`.
- Actually run `generate-files.sh` to generate the yaml file.
- Fix the time UTC comment (the other times were correctly set).

Author: tcharding

.github/workflows/cron-daily-fuzz.yml

@@ -1,12 +1,12 @@
 # Automatically generated by fuzz/generate-files.sh
 name: Fuzz
-
 on:
-  push:
-    branches:
-      - master
-      - 'test-ci/**'
-  pull_request:
+  schedule:
+    # 6am every day UTC, this correlates to:
+    # - 11pm PDT
+    # - 7am CET
+    # - 5pm AEDT
+    - cron: '00 06 * * *'
 
 jobs:
   fuzz:
@@ -15,6 +15,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        # We only get 20 jobs at a time, we probably don't want to go
+        # over that limit with fuzzing because of the hour run time.
         fuzz_target: [
 roundtrip_semantic,
 parse_descriptor,
@@ -28,20 +30,18 @@ compile_descriptor,
     steps:
       - name: Install test dependencies
         run: sudo apt-get update -y && sudo apt-get install -y binutils-dev libunwind8-dev libcurl4-openssl-dev libelf-dev libdw-dev cmake gcc libiberty-dev
-      - uses: actions/checkout@v2
-      - uses: actions/cache@v2
+      - uses: actions/checkout@v4
+      - uses: actions/cache@v4
         id: cache-fuzz
         with:
           path: |
             ~/.cargo/bin
             fuzz/target
             target
           key: cache-${{ matrix.target }}-${{ hashFiles('**/Cargo.toml','**/Cargo.lock') }}
-      - uses: actions-rs/toolchain@v1
+      - uses: dtolnay/rust-toolchain@stable
         with:
-          toolchain: '1.65'
-          override: true
-          profile: minimal
+          toolchain: '1.65.0'
       - name: fuzz
         run: cd fuzz && ./fuzz.sh "${{ matrix.fuzz_target }}"
       - run: echo "${{ matrix.fuzz_target }}" >executed_${{ matrix.fuzz_target }}

fuzz/generate-files.sh

@@ -38,12 +38,12 @@ EOF
 done
 
 # 2. Generate .github/workflows/fuzz.yml
-cat > "$REPO_DIR/.github/workflows/fuzz.yml" <<EOF
+cat > "$REPO_DIR/.github/workflows/cron-daily-fuzz.yml" <<EOF
 # Automatically generated by fuzz/generate-files.sh
 name: Fuzz
 on:
   schedule:
-    # 5am every day UTC, this correlates to:
+    # 6am every day UTC, this correlates to:
     # - 11pm PDT
     # - 7am CET
     # - 5pm AEDT