SRE-805: Harden Docker mise tool installation against transient upstream failures

.config/mise/config.toml

@@ -1,11 +1,12 @@
-min_version = "2026.4.22"
+min_version = "2026.6.13"
 
 [env]
 TURBO_GLOBAL_WARNING_DISABLED = 1
 _.file                        = [".env", ".env.local"]
 
 [settings]
 idiomatic_version_file_enable_tools = ["rust"]
+lockfile                            = true
 minimum_release_age                 = "5d"
 
 [tools]

.github/actions/install-tools/action.yml

@@ -22,7 +22,7 @@ runs:
     - name: Run `mise install` with `ci` environment
       uses: jdx/mise-action@146a28175021df8ca24f8ee1828cc2a60f980bd5 # v3.5.1
       with:
-        install_args: --env ci --jobs 1
+        install_args: --env ci --jobs 1 --locked
       env:
         MISE_VERBOSE: 1
         GITHUB_TOKEN: ${{ inputs.token }}

README.md

@@ -69,7 +69,7 @@ Install these on the host first:
 - **[Docker](https://docs.docker.com/get-docker/)** (≥ 20.10), including:
   - **[Docker Compose](https://docs.docker.com/compose/)** (≥ 2.17) — orchestrates the stack
   - **[Docker Buildx](https://docs.docker.com/build/install-buildx/)** (≥ 0.10) — builds the images
-- **[mise](https://mise.jdx.dev/)** (≥ 2026.4.22) — installs and pins Node, Rust, protoc and the other required tool versions
+- **[mise](https://mise.jdx.dev/)** (≥ 2026.6.13) — installs and pins Node, Rust, protoc and the other required tool versions
 
 Give Docker at least **8 GB RAM** (Preferences → Resources) and keep ~15 GB of disk free for build artefacts, images and volumes.
 
@@ -80,7 +80,7 @@ git --version            # ≥ 2.17
 docker --version         # ≥ 20.10
 docker compose version   # ≥ 2.17
 docker buildx version    # ≥ 0.10
-mise --version           # ≥ 2026.4.22
+mise --version           # ≥ 2026.6.13
 ```
 
 #### Setup