ci: reduce workflow runs (#563)

Skips coverage for dependency updates, and no longer runs benchmarks and
fossa scan for documentation-only changes.

Author: stuebingerb

.github/workflows/benchmarks-base.yml

@@ -4,6 +4,8 @@ on:
   push:
     branches:
       - main
+    paths-ignore:
+      - 'docs/**/*'
 
 permissions:
   checks: write

.github/workflows/coverage.yml

@@ -11,6 +11,7 @@ permissions:
 
 jobs:
   coverage:
+    if: github.actor != 'renovate[bot]'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6

.github/workflows/fossa.yml

@@ -4,6 +4,8 @@ on:
   push:
     branches:
       - main
+    paths-ignore:
+      - 'docs/**/*'
 
 permissions:
   contents: read