ci: try to fix "Failed to create bin" warnings

```
 WARN  Failed to create bin at /home/runner/work/atproto/atproto/packages/api/node_modules/.bin/lex. ENOENT: no such file or directory, open '/home/runner/work/atproto/atproto/packages/lex-cli/dist/index.js'
 WARN  Failed to create bin at /home/runner/work/atproto/atproto/packages/bsky/node_modules/.bin/lex. ENOENT: no such file or directory, open '/home/runner/work/atproto/atproto/packages/lex-cli/dist/index.js'
 WARN  Failed to create bin at /home/runner/work/atproto/atproto/packages/lexicon-resolver/node_modules/.bin/lex. ENOENT: no such file or directory, open '/home/runner/work/atproto/atproto/packages/lex-cli/dist/index.js'
 WARN  Failed to create bin at /home/runner/work/atproto/atproto/packages/ozone/node_modules/.bin/lex. ENOENT: no such file or directory, open '/home/runner/work/atproto/atproto/packages/lex-cli/dist/index.js'
 WARN  Failed to create bin at /home/runner/work/atproto/atproto/packages/pds/node_modules/.bin/lex. ENOENT: no such file or directory, open '/home/runner/work/atproto/atproto/packages/lex-cli/dist/index.js'
 WARN  Failed to create bin at /home/runner/work/atproto/atproto/packages/sds/node_modules/.bin/lex. ENOENT: no such file or directory, open '/home/runner/work/atproto/atproto/packages/lex-cli/dist/index.js'
 WARN  Failed to create bin at /home/runner/work/atproto/atproto/node_modules/.bin/dev-env. ENOENT: no such file or directory, open '/home/runner/work/atproto/atproto/node_modules/@atproto/dev-env/dist/bin.js'
```

Author: Adam Spiers

.github/workflows/repo.yaml

@@ -70,11 +70,11 @@ jobs:
         with:
           path: ~/.cache
           key: ${{ env.CURRENT_MONTH }}-${{ runner.os }}
-      - run: pnpm i --frozen-lockfile
       - uses: actions/download-artifact@v4
         with:
           name: dist
           path: packages
+      - run: pnpm i --frozen-lockfile
       - run: pnpm test:withFlags --maxWorkers=1 --shard=${{ matrix.shard }} --passWithNoTests
   verify:
     name: Verify
@@ -100,9 +100,9 @@ jobs:
         with:
           path: ~/.cache
           key: ${{ env.CURRENT_MONTH }}-${{ runner.os }}
-      - run: pnpm i --frozen-lockfile
       - uses: actions/download-artifact@v4
         with:
           name: dist
           path: packages
+      - run: pnpm i --frozen-lockfile
       - run: pnpm verify