ci(release): fetch full git history and tags for build.rs

build.rs uses vergen-git2 (Git2::all_git), which runs `git describe` and
reads commit metadata. The build and publish-crate jobs checked out a
shallow clone without tags, so vergen could not resolve the describe
string and libgit2 may fail on shallow repos. Add fetch-depth: 0 and
fetch-tags: true to both jobs that compile the crate.

.github/workflows/release.yml

@@ -115,6 +115,8 @@ jobs:
         with:
           ref: ${{ inputs.dry_run && github.sha || 'main' }}
           persist-credentials: false
+          fetch-depth: 0
+          fetch-tags: true
       - uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable
         with:
           targets: ${{ matrix.target }}
@@ -382,6 +384,8 @@ jobs:
         with:
           ref: main
           persist-credentials: false
+          fetch-depth: 0
+          fetch-tags: true
       - uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable
 
       - name: Install dependencies (Linux)