Time out workflows after 45 minutes

GitHub's default timeout is 6 hours. Recently some of my GitHub Actions
jobs have started randomly stalling for that long, which is inconvenient
because it ties up a chunk of my runner quota. It apepars to be very
rare for a job to recover after stalling. It's better to time out
quicker and retry on a different runner.

.github/workflows/ci.yml

@@ -19,6 +19,7 @@ jobs:
  fail-fast: false
  matrix:
  os: [ubuntu, windows]
+ timeout-minutes: 45
  steps:
  - uses: actions/checkout@v3
  - uses: dtolnay/rust-toolchain@nightly
@@ -44,6 +45,7 @@ jobs:
  target: aarch64-unknown-none
  - rust: stable
  os: windows
+ timeout-minutes: 45
  steps:
  - uses: actions/checkout@v3
  - uses: dtolnay/rust-toolchain@master
@@ -71,6 +73,7 @@ jobs:
  runs-on: ubuntu-latest
  env:
  MIRIFLAGS: -Zmiri-strict-provenance
+ timeout-minutes: 45
  steps:
  - uses: actions/checkout@v3
  - uses: dtolnay/rust-toolchain@miri
@@ -81,6 +84,7 @@ jobs:
  name: Clippy
  runs-on: ubuntu-latest
  if: github.event_name != 'pull_request'
+ timeout-minutes: 45
  steps:
  - uses: actions/checkout@v3
  - uses: dtolnay/rust-toolchain@clippy
@@ -90,6 +94,7 @@ jobs:
  docs:
  name: Documentation
  runs-on: ubuntu-latest
+ timeout-minutes: 45
  steps:
  - uses: actions/checkout@v3
  - uses: dtolnay/rust-toolchain@nightly
@@ -100,6 +105,7 @@ jobs:
  fuzz:
  name: Fuzz
  runs-on: ubuntu-latest
+ timeout-minutes: 45
  steps:
  - uses: actions/checkout@v3
  - uses: dtolnay/rust-toolchain@nightly
@@ -110,6 +116,7 @@ jobs:
  name: Outdated
  runs-on: ubuntu-latest
  if: github.event_name != 'pull_request'
+ timeout-minutes: 45
  steps:
  - uses: actions/checkout@v3
  - uses: dtolnay/install@cargo-outdated