chore(ci): Install diesel_cli with just postgres feature (#312)

I noticed #311 was
failing on the `diesel_cli` install step.

Digging in a bit, I noticed the [`ubuntu-latest` runner image was
changed](actions/runner-images#10636) to point
from [Ubuntu 22.04, which has `libsqlite3-dev` installed by
default](https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md#installed-apt-packages),
to [Ubuntu 24.04 instead and that no longer includes `libsqlite3-dev` in
the default apt
packages](https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2404-Readme.md#installed-apt-packages).

This simply adjusts the features that are enabled from defaults to just
`postgres`, which is what the CI workflow uses.

Additionally I folded in the changes from #313:
> Per the failure in
#312, Rust 1.84
deprecated wasm32-wasi target, and thus it now needs to be set to either
wasm32-wasip1 or wasm32-wasip2.
> 
> I wasn't sure if we wanted to target p1 or p2, so I defaulted to p2,
but happy to switch it to p1 if that's preferred.

---------

Signed-off-by: Joonas Bergius <[email protected]>

.github/workflows/main.yml

@@ -19,8 +19,12 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Install Rust
-      run: rustup update stable --no-self-update && rustup default stable && rustup target add wasm32-wasi && rustup target add wasm32-unknown-unknown
       shell: bash
+      run: |
+        rustup update stable --no-self-update
+        rustup default stable
+        rustup target add wasm32-wasip2
+        rustup target add wasm32-unknown-unknown
     - name: Build all crates
       run: cargo build --all --features warg-server/debug
     - name: Run all tests
@@ -35,10 +39,14 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Install Rust
-      run: rustup update stable --no-self-update && rustup default stable && rustup target add wasm32-wasi && rustup target add wasm32-unknown-unknown
       shell: bash
+      run: |
+        rustup update stable --no-self-update
+        rustup default stable
+        rustup target add wasm32-wasip2
+        rustup target add wasm32-unknown-unknown
     - name: Install diesel-cli
-      run: cargo install diesel_cli
+      run: cargo install --no-default-features --features postgres diesel_cli
     - name: Build all crates
       run: cargo build --all --features postgres
     - name: Run postgres tests
@@ -50,7 +58,9 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Install Rust
-      run: rustup update stable --no-self-update && rustup default stable
+      run: |
+        rustup update stable --no-self-update
+        rustup default stable
     - name: Install warg CLI
       run: cargo install --locked --path .
 
@@ -60,6 +70,9 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Install Rust
-      run: rustup update stable && rustup default stable && rustup component add rustfmt
+      run: |
+        rustup update stable
+        rustup default stable
+        rustup component add rustfmt
     - name: Run `cargo fmt`
       run: cargo fmt -- --check