ci: create cache

.forgejo/workflows/build.yml

@@ -31,6 +31,7 @@ jobs:
           apt-get -q install -qq \
             make \
             ;
+          mkdir -p /opt/hostedtoolcache
 
       - uses: actions/checkout@v4
         with:
@@ -62,6 +63,7 @@ jobs:
             python3-venv \
             unzip \
             ;
+          mkdir -p /opt/hostedtoolcache
 
       - name: install helm
         uses: azure/setup-helm@5119fcb9089d432beecbf79bb2c7915207344b78 # v3.5
@@ -116,6 +118,8 @@ jobs:
             python3-venv \
             unzip \
             ;
+          mkdir -p /opt/hostedtoolcache
+
       - name: install docker
         run: |
           install -m 0755 -d /etc/apt/keyrings