fuzz: Update generate-files.sh

Recently we modified the fuzz job manually and forgot about the
`generate-files.sh` file.

Update the script to match the current CI job, running it now produces
the same file `cron-daily-fuzz.sh`.

fuzz/generate-files.sh

@@ -22,7 +22,7 @@ cargo-fuzz = true
 
 [dependencies]
 honggfuzz = { version = "0.5.55", default-features = false }
-bitcoin = { version = "0.31.0", features = [ "serde" ] }
+bitcoin = { path = "../bitcoin", features = [ "serde" ] }
 
 serde = { version = "1.0.103", features = [ "derive" ] }
 serde_json = "1.0"
@@ -40,16 +40,16 @@ 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:
-  push:
-    branches:
-      - master
-      - 'test-ci/**'
-  pull_request:
+  schedule:
+    # 5am every day UTC, this correlates to:
+    # - 10pm PDT
+    # - 6am CET
+    # - 4pm AEDT
+    - cron: '00 05 * * *'
 
 jobs:
   fuzz:
@@ -58,6 +58,8 @@ 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: [
 $(for name in $(listTargetNames); do echo "          $name,"; done)
         ]
@@ -65,7 +67,7 @@ $(for name in $(listTargetNames); do echo "          $name,"; done)
       - 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@v4
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         id: cache-fuzz
         with:
           path: |