Include Manifest hashes in GHA cache key

Closes #496

Author: penelopeysm

.github/workflows/publish.yml

@@ -27,14 +27,12 @@ jobs:
         run: sudo apt-get install jq
 
       - name: Restore cached _freeze folder
-        id: cache-primes-restore
+        id: cache-restore
         uses: actions/cache/restore@v4
         with:
           path: |
             _freeze/
-          key: ${{ runner.os }}-primes-${{ github.run_id }}
-          restore-keys: |
-            ${{ runner.os }}-primes
+          key: ${{ runner.os }}-${{ hashFiles('**/Manifest.toml') }}
 
       - name: Extract version from _quarto.yml
         id: extract_version
@@ -70,12 +68,12 @@ jobs:
         run: mv _site/search.json _site/search_original.json
 
       - name: Save _freeze folder
-        id: cache-primes-save
+        id: cache-save
         uses: actions/cache/save@v4
         with:
           path: |
             _freeze/
-          key: ${{ runner.os }}-primes-${{ github.run_id }}
+          key: ${{ runner.os }}-${{ hashFiles('**/Manifest.toml') }}
 
       - name: Fetch search_original.json from main site
         run: curl -O https://raw.githubusercontent.com/TuringLang/turinglang.github.io/gh-pages/search_original.json