Bump development/toolchain-go to 1.21.5 (#595)

packages/toolchain-go/collection.yaml

@@ -2,7 +2,7 @@ packages:
   - name: toolchain-go
     category: development
     variant: "alpine"
-    version: "1.20.2"
+    version: "1.21.5"
     hidden: true
     labels:
       autobump.revdeps: "false"
@@ -13,6 +13,7 @@ packages:
         curl -s -L "https://go.dev/dl/?mode=json" |jq -r '.[0].version'| sed 's/go//g'
       autobump.version_hook: |
         curl -s -L "https://go.dev/dl/?mode=json" |jq -r '.[0].version'| sed 's/go//g'
+      package.version: "1.21.5"
   - name: toolchain-go-ubuntu
     variant: ""
     category: development
@@ -78,4 +79,4 @@ packages:
     category: fips
     version: "1.19.10"
     tag: "1.19.10"
-    hidden: true
+    hidden: true