ci: note that Anza's stable can resolve to a not-yet-published release

Adds a one-line comment above the 'solana-cli-version: stable' lines in each setup-anchor / setup-solana workflow, so a future reader understands why CI sometimes fails on a green main with no code change. No behaviour change; the value remains 'stable'.

Author: mikemaccana-edwardbot

.github/workflows/anchor.yml

@@ -138,6 +138,7 @@ jobs:
       - uses: heyAyushh/setup-anchor@v4.999
         with:
           anchor-version: 1.0.0
+          # Sometimes Anza's stable resolves to a release whose binaries aren't published yet
           solana-cli-version: stable
       - name: Install Surfpool
         run: curl -sL https://run.surfpool.run/ | bash

.github/workflows/native.yml

@@ -222,6 +222,7 @@ jobs:
       - name: Setup Solana Stable
         uses: heyAyushh/setup-solana@v5.9
         with:
+          # Sometimes Anza's stable resolves to a release whose binaries aren't published yet
           solana-cli-version: stable
       - name: Build and Test with Stable
         run: |

.github/workflows/pinocchio.yml

@@ -222,6 +222,7 @@ jobs:
       - name: Setup Solana Stable
         uses: heyAyushh/setup-solana@v5.9
         with:
+          # Sometimes Anza's stable resolves to a release whose binaries aren't published yet
           solana-cli-version: stable
       - name: Build and Test with Stable
         run: |

.github/workflows/quasar.yml

@@ -197,6 +197,7 @@ jobs:
       - name: Setup Solana Stable
         uses: heyAyushh/setup-solana@v5.9
         with:
+          # Sometimes Anza's stable resolves to a release whose binaries aren't published yet
           solana-cli-version: stable
       - name: Install Quasar CLI
         # Pinned to quasar rev 3d6fb0d8 (the HEAD this migration was written

.github/workflows/solana-asm.yml

@@ -188,6 +188,7 @@ jobs:
       - name: Setup Solana Stable
         uses: heyAyushh/setup-solana@v5.9
         with:
+          # Sometimes Anza's stable resolves to a release whose binaries aren't published yet
           solana-cli-version: stable
       - name: Build and Test with Stable
         run: |