Do not fail action on cache errors

Ensure that we catch and log errors in `beforeSave` and `afterRestore`,
and do not fail the entire workflow in these cases.

src/cache-utils.ts

@@ -141,7 +141,13 @@ export abstract class AbstractCache {
             `Restored ${this.cacheDescription} from cache key: ${cacheResult}`
         )
 
-        await this.afterRestore()
+        try {
+            await this.afterRestore()
+        } catch (error) {
+            core.warning(
+                `Restore ${this.cacheDescription} failed in 'afterRestore': ${error}`
+            )
+        }
 
         return
     }
@@ -193,7 +199,14 @@ export abstract class AbstractCache {
             return
         }
 
-        await this.beforeSave()
+        try {
+            await this.beforeSave()
+        } catch (error) {
+            core.warning(
+                `Save ${this.cacheDescription} failed in 'beforeSave': ${error}`
+            )
+            return
+        }
 
         core.info(
             `Caching ${this.cacheDescription} with cache key: ${cacheKey}`