ci: add typescript and sharp (for images)

pnpm-lock.yaml

@@ -66,6 +66,9 @@ importers:
       prettier-plugin-tailwindcss:
         specifier: ^0.7.2
         version: 0.7.2(prettier-plugin-astro@0.14.1)(prettier@3.8.1)
+      sharp:
+        specifier: ^0.34.5
+        version: 0.34.5
       stylelint:
         specifier: ^17.4.0
         version: 17.4.0(typescript@5.9.3)
@@ -81,6 +84,9 @@ importers:
       stylelint-config-tailwindcss:
         specifier: ^1.0.1
         version: 1.0.1(stylelint@17.4.0(typescript@5.9.3))(tailwindcss@4.2.1)
+      typescript:
+        specifier: ^5.9.3
+        version: 5.9.3
 
 packages:
 
@@ -4364,8 +4370,7 @@ snapshots:
 
   '@humanwhocodes/retry@0.4.3': {}
 
-  '@img/colour@1.1.0':
-    optional: true
+  '@img/colour@1.1.0': {}
 
   '@img/sharp-darwin-arm64@0.34.5':
     optionalDependencies:
@@ -7416,7 +7421,6 @@ snapshots:
       '@img/sharp-win32-arm64': 0.34.5
       '@img/sharp-win32-ia32': 0.34.5
       '@img/sharp-win32-x64': 0.34.5
-    optional: true
 
   shebang-command@2.0.0:
     dependencies: